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the highest yield     
相关语句
  最高产量
     The highest yield was 7.16t·hm~(-2).
     hm-2,最高产量达7.16t.
短句来源
     when the highest yield apply fertilizer is 290.8kg/ha,it's output is 91656kg/ha,and when the optimum yield apply fertilizer is 279.3kg/ha,it's output is 91631kg/ha.
     最高产量施肥量为290.8kg/ha,茄子产量为91656kg/ha. 最佳产量施肥量为279.3kg/ha,茄子产量为91631kg/ha.
短句来源
     3. By simulation with computer, to achieve the highest yield 118176.5kg/hm2, the optimal combination of N, P2O5 and K2O was 225.0, 160.5 and 108.0(kg/hm2) respectively.
     3.通过计算机模型寻优,得到N、P_2O_5、K_2O用量分别在225.0、160.5、108.0(kg/hm~2)时达到最高产量118176.5kg/hm~2。
短句来源
     Accordingto fine selection of factor levels, the yield 12085.8 kg/hm2 gained under x 1=-2, x 2=2,x 3=2,x 4=2 and x 5=-2 increased by 6747.0kg/hm2 (125.92%) over that under every factor level being equal to zero and by 83.38% over the highest yield 7575.0kg/hm 2 in wheat cultural history of Sichuan.
     因子水平选优,当x1取-2、x2取2、x3取2、x4取2、x5取-2时,获得产量12085.8kg/hm2,比各因子取0水平时,净增6747.0kg/hm2,增产125.92%,比四川小麦历史最高产量7575.0kg/hm2,增产83.38%。
短句来源
     Under this soil condition,the result showed that the amount of N,P_2O_5 and K_2O for the highest yield were 264.28,82.94,290.34 kg/hm~2 and 114 045.30 kg/hm~2 respectively.
     结果表明,在该土壤条件下的日光温室内,氮(N)、磷(P2O5)、钾(K2O)肥施用量分别为264.28,82.94和290.34 kg/hm2时,黄瓜可达到的最高产量为114 045.30 kg/hm2。
短句来源
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  产量最高
     The highest yield of rice,wheat,and rape,through calculation of the equation,was 6869.3 kg/hm2,3517.1 kg/hm2,2424.2 kg/hm2 with 146.6 kg/hm2? 145.6 kg/hm2? 183.6 kg/hm2 of K fertilizer input,respectively.
     水稻、小麦、油菜分别在施钾146.6kg/hm2、145.6kg/hm2、183.6kg/hm2时的产量最高,单位面积产量分别为6869.3kg/hm2、3517.1kg/hm2、2424.2kg/hm2。
短句来源
     The highest yield among genotypes at seven sites were MY1227-185(6093 kg/hm2)and ML2652(6082 kg/hm2), while the lowest yield was Chuanmai107 (5202 kg/hm2), which were significant at 1% level.
     各基因型在7个试点中产量最高的是MY1227-185(6093kg/hm2)和ML2652(6082kg/hm2),极显著高于对照川麦107(5202kg/hm2);
短句来源
     The highest yield was 35.3 g per pot and increased at a rate of 33.7% compared to the treatment without fertilizer and water supply in the case of relative water content 60% and fertilizer treatments with N 0.04 g/kg soil,P2O5 0.02 g/kg soil and K2O 0.30 g/kg soil.
     随着水分和施肥量的增加,产量增加,在相对含水量为60%和肥料F3(N:0.04 g/kg、P2O5:0.02 g/kg、K2O:0.30 g/kg)情况下,产量最高(17.7 g/株),比无钾肥干旱增产33.7%。
短句来源
     And for V10, the highest yield occurred in the treatment of base + tillering fertilization, increased rice yield 6.35%, 13.03%, 19.08% than other treatments.
     穗数型水稻V10的处理2(基肥+蘖肥)产量最高,分别比其它处理(3,4,1)增产6.35%,13.03%,19.08%。
短句来源
     When the yield of 21×104kg/hm~2 was the highest, yield was 15523.05kg/hm~2.
     以低密度处理21万株/hm~2的产量最高,为15523.05kg/hm~2。
短句来源
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  最高产率
     Molar ratio of glycidyl laurate and lauric acid 1∶2, reaction temperature 110℃, reaction time 1.5h, the highest yield of glyceryl dilaurate 63%.
     缩水月桂酸甘油酯与月桂酸的摩尔比约为1∶2、反应温度110℃、反应时间1.5h,最高产率为63%。
短句来源
     The highest yield is 84. 5%.
     最高产率为84.5%。
短句来源
     When the molar ratio of glycidyl laurate and lauric acid 1 to 2, reaction temperature 110℃ ,reaction time 1.5h the highest yield of glyceryl dilaurate was 63%.
     缩水月桂酸甘油酯与月桂酸的摩尔比约为1:2,反应温度为110℃,反应时间为1.5h,最高产率为63%。
短句来源
     The highest yield is near to 48% and the equal-yield is above 45%.
     最高产率接近48%,平均产率在45%以上。
短句来源
     The result showed: 1 % Snailase+1.2 % Cellulase+0.5 % Hemicellulase is the best enzyme combination on isolation of protoplasts from potato tetrad after cold pretreatment, the highest yield up to 78.05 %;
     结果表明:用1 % 蜗牛酶+1.2 % 纤维素酶+0.5 % 半纤维素酶的混合酶液能大量游离出经低温预处理的马铃薯四分体小孢子原生质体,原生质体的最高产率达78.05 %;
短句来源
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  收率最高
     Under the optimal reaction conditions: reaction temperature 180 ℃, reaction time 2 h, catalyst concentration 0.9%(wt), and molar ratio of urea to PG 1:4, the highest yield of PC was 86.9%.
     负载Pb催化剂上最佳反应条件为:反应温度180℃,反应时间2h,催化剂用量0.9%(wt),尿素与1,2-丙二醇摩尔比1:4,碳酸丙烯酯收率最高为86.9%。
短句来源
     The best condition of reaction is: if,on the basis of 0.2mol ethanol,the mass of catalyst reaching 1.2g,the temperature of reaction controlled about 80℃,the rate of ethanol and acetic acid is 1 to 1.5,the highest yield of the reaction can reach82.4%.
     最佳反应条件为:以0.2摩尔乙醇为基准,醇酸摩尔比为1∶1.5,催化剂用量为1.2g,反应温度控制在80℃回流温度。 酯收率最高可达到82.4%。
短句来源
     The results showed that jasmine aldehyde was prepared with the highest yield of 85.1% under the conditions which were as follows:the molar ratio of benzaldehyde to heptaldehyde was 1.4∶1,the dosages of DMF and BTEAC were 5.0 g and 2.0 g,respectively.
     实验结果表明:在n(苯甲醛)∶n(庚醛)=1.4∶1,BTEAC用量为2.0 g,DM F用量为5.0 g时,素馨醛的收率最高,达到85.1%.
短句来源
     The optimal reaction conditions are as follows: reaction temperature 170 ℃, reaction time 2 h, catalyst concentration 1.4%(wt), molar ratio of urea to PG 1:4. The highest yield of PC was 78.6%.
     最佳反应条件为:反应温度170℃,反应时间2h,催化剂用量1.%(wt),尿素与1,2-丙二醇摩尔比1:4,碳酸丙烯酯收率最高为78.6%。
短句来源
     The result shows that the highest yield can be obtained when Pb/ Pd is 0. 4(atom ratio), pH is 8, the temperature is about 90 C ,and the time is 3.5 h.
     结果表明,当Pb/Pd(原子比)为0.4,pH值为8,反应温度控制在90℃左右,反应时间控制在3.5h左右时,丙酮酸收率最高
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  the highest yield
Preparation 181-1008, which had a high proteinase activity, provided the highest yield of protein from soybean flour and sunflower meal.
      
Preparations aGA, AG20X, and VR, characterized by high activities of pectinase and α-galactosidase, as well as laboratory preparation B2000Mix with a high activity of α-galactosidase, provided the highest yield of sugars from soybean flour.
      
The highest yield of reducing sugars was observed after treatment of wheat and barley flour with preparations B2000Mix and aGA.
      
The highest yield of the target 2-chloro-2'-deoxyadenosine (up to 95% in the case of deoxyguanosine) was reached when using 2'-deoxypurines as donors of deoxyribose.
      
The maximum methane conversion and the highest yield of aromatic hydrocarbons are achieved on the zeolite containing 8.0 wt % tungsten nanopowder.
      
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This investigation was undertaken to attain by means of pot cultures and chemical analyses a better understanding of the significance of the degree of base saturation in relation to the growth and mineral composition of certain crops. Two relatively pure mineral colloids, bentonite and kaolin, and a lucastrine orchard soil containing illitic type of clay minerals were used for the studies. Bentonite and kaolin were first electrodialyzed and then mixed with different amounts of pure quartz sand to give different...

This investigation was undertaken to attain by means of pot cultures and chemical analyses a better understanding of the significance of the degree of base saturation in relation to the growth and mineral composition of certain crops. Two relatively pure mineral colloids, bentonite and kaolin, and a lucastrine orchard soil containing illitic type of clay minerals were used for the studies. Bentonite and kaolin were first electrodialyzed and then mixed with different amounts of pure quartz sand to give different levels of base exchange capacity. Treatments were made to all three cultural media for varying degrees of base saturation with constant ratio between exchangeable bases. Oats and rye were grown in succession in montmorillonitic and kaolinitic media, while peach, soybean, proso, tomato and oats were grown in the illitic soil. Dry weights and contents of certain mineral constituents of oats, rye and tomato were determined. Yield data from the montmorillonitic media showed nearly linear relationship between the degree of base saturation and the growth of the plants. In the kaolinitic media the increase of yield was only noticeable from the first increment of bases, effects above 40% total base saturation being insignificant. The results from illitic soil were intermediate between those mentioned above, i.e., the highest yield of tomato was obtained at the 75% saturation level. The yield data further indicate that the growth of plants was more closely related to the degree of base saturation than to the total supply of exchangeable bases. With the same amounts of bases and at the levels below 60% base saturation, the yields of rye in the kaolinitic colloid were higher than in the montmorillonitic colloid. In the montmorillonitic media, the increase of Ca uptake by the plants from the first increment of Ca was pronounced with only little effects above 30% Ca saturation (or 40% level of total base saturation). The K content of the plants was increased appreciably at only the higher levels of base saturation, while significant increases of the Mg content of the plants occured at lower levels (i.e. below 60% base saturation level). In the kaolinitic media, no appreciable change of Ca and Mg contents of the plants was noticed. This is an interesting contrast to the results obtained with the montmorillonitic media. However, there were definite increases in K content of plants with increasing increments of K at the lower levels of saturation. The higher contents of Ca and Mg in the plants were found in kaolinitic media rather than in the montmorillonitic media provided that the total base saturation level was under 60% of the exchange capacity. On the other hand, the K content of the plants from montmorillonitic media was invariably higher than from kaolinitic media. In the illitic soil, the most marked increase of Ca content in plants occured when the degree of base saturation increased from the 50% to the 75% level. Beyond that point, no appreciable increase was noticed. As the degree of base saturation of illitic soil increased, the K and Mg percentages in plants increased also. Among the conclusions obtained from the experiments, the following are of outstanding significance: 1. Exchangeable cations are not equally available. With the equal supply of total exchangeable cations, their availability varies with the degree of base saturation. Within a certain range, the higher the degree of base saturation, the greater the availability of the exchangeable cation. This affords a theoretical explanation of the advantage of localized application of fertilizers. 2. The availability of exchangeable cations varies with the nature of clay minerals. With the given amount of exchangeable cations and the same degree of base saturation, the individual exchangeable cation held by the clay mineral differs in availability according to the following order: For Ca" and K', kaolinite>montmorillonite>kaolinite. This gives the reason why a montmorillonitic soil should be fertilized with respect to the Ca and K to higher levels than a kaolinitic soil. 3. In order to afford sufficient amount of active cations for the growth of plants, higher degree of ionic saturation is required for Ca" than is for Mg", which in turn should be higher than for K'. The study also discusses, from the theoretical point of view, some of the factors involved in determining the availability of exchangeable bases.

本研究之主要目的在于寻求不同粘粒矿物所吸附的代換性陽离子对植物生長及其矿質营养成分的影响。通过这一試驗,希望了解影响代换性陽离子的若干重要因子,从而提供关于施肥原則及技术的若干理論。试验分温室栽培及植株化学分析兩部份。栽培所用植物包括燕麦、黑麦、小米、大豆、番茄、桃树等数种,培养基根据所合粘番矿物不同,分微晶高陵土系,高陵土系及水化云母系三大类。培养基的鹽基代換率、鹽基飽和度,以及各代换性鹽基間的互相比例,均加以控制。另以砂培处理为对照,試驗的主要結果可以綜結如下: 1.在微晶高陵土系的栽培試驗里,植物的生長概和鹽基飽和度成直线相关,但高陵土系及水化云母系的栽培試驗結果并不完全如此。在这些培养基理,植物的生長,虽然也因鹽基飽和度的增加而改善,但其改善的趋势停止于一定的鹽基飽和度水平上。例如,在本試驗里,对黑麦和燕麦言,当高陵土系培养基的鹽基飽和度达到40%时,或对番茄言, 当水化云母系培养基的鹽基飽和度达到75%时,植物的生長都不再因鹽基飽和度的增加而改善了,这說明就植物的矿質营养言,鹽基飽和度具有特殊重要的意义。一般說来,鹽基飽和度愈大,代换性鹽基的有效度也愈大。 2.作为影响植物矿質营养的土埌肥力因素,鹽...

本研究之主要目的在于寻求不同粘粒矿物所吸附的代換性陽离子对植物生長及其矿質营养成分的影响。通过这一試驗,希望了解影响代换性陽离子的若干重要因子,从而提供关于施肥原則及技术的若干理論。试验分温室栽培及植株化学分析兩部份。栽培所用植物包括燕麦、黑麦、小米、大豆、番茄、桃树等数种,培养基根据所合粘番矿物不同,分微晶高陵土系,高陵土系及水化云母系三大类。培养基的鹽基代換率、鹽基飽和度,以及各代换性鹽基間的互相比例,均加以控制。另以砂培处理为对照,試驗的主要結果可以綜結如下: 1.在微晶高陵土系的栽培試驗里,植物的生長概和鹽基飽和度成直线相关,但高陵土系及水化云母系的栽培試驗結果并不完全如此。在这些培养基理,植物的生長,虽然也因鹽基飽和度的增加而改善,但其改善的趋势停止于一定的鹽基飽和度水平上。例如,在本試驗里,对黑麦和燕麦言,当高陵土系培养基的鹽基飽和度达到40%时,或对番茄言, 当水化云母系培养基的鹽基飽和度达到75%时,植物的生長都不再因鹽基飽和度的增加而改善了,这說明就植物的矿質营养言,鹽基飽和度具有特殊重要的意义。一般說来,鹽基飽和度愈大,代换性鹽基的有效度也愈大。 2.作为影响植物矿質营养的土埌肥力因素,鹽基飽和度的重要性一般超过鹽基代換率。試驗的結果表明:鹽基代換率不等,而鹽基飽和度相等的同一發生学来源的土埌,其植物生長狀况一般相等或相差不远。这說明代換性鹽基的絕对数量不足以指示作物生長的优劣。不仅如此,試驗的結果也啟示出含代換性陽离子絕对数量相等的兩种同源土埌,就对植物的矿質营养言,并不意味着具有相等的供应該有效性陽离子的能力。由于它們間質地上的可能差異,——質地輕者鹽基代换率小,質地粘重者,鹽基代換率大,——因之其鹽基飽和度就不相等。飽和度大者,鹽基的有效度就高。 3.栽培試驗及室內化学分析的結果都表明在总鹽基飽和度为60%以下的土埌中(Ca:Mg:K=15:3:2),高陵土类粘粒矿物上的代换性Ca~(++)及Mg~(++)的有效度均高于微晶高陵土,而K~+則相反。 4.植物矿質成分的化学分析結果表明:各营养离子的鹽基飽和度在一定范圍内的变化,可以显著地影响它进入植物体內的量。例如,当微晶高陵土系培养基的鈣离子飽和度在30%以下的范圍內作增减的变动时,都能明显地反映在其所生長的植物体內的含鈣量上。植物体內的鉀离子,則能反映飽和度自4%至6%的范圍內的变化。鎂的情况大体近似于鉀,只是其变化范圍更小一些。这說明同一种植物为了滿足其自身的营养需要,对于同一种粘粒矿物上所吸附的不同离子,有不同的飽和度的要求。鈣最大,(对黑麦,燕麦而言約30%以上),鎂次之(約9%),鉀最小(約6%)。这些标准也是施肥的最低要求。 5.栽培試驗及化学分析都証明同一种离子吸附在不同的粘粒矿物上,縱然离子飽和度相等,其对植物生長和矿質养分的影响也不相等。研究結果显示出在同一离子飽和度下,不同粘粒矿物上的离子有效度大体依下列次序变化:高陵土>微晶高陵土>水化云母。在农業实踐中,不同类型的土埌所要求的施肥标准不等,在这里也得到了一些理論根据。試驗結果对于实际施肥,应有一定的指导价值。除以上主要結果外,本文还对有关代換性离子有效度的理論問題进行了討論和分析,并提出了作者自己的初步意見。

Phosphoramides are prepared for enzyme studies. These compounds can be easily obtained by refluxing one mole of amidodichlorophosphate and two moles of anhydrous formic acid in an anhydrous organic solvent for about three hours. The high yield and the simple procedure for isolation of the product make this method superior to those described in the literature. By this method we have so far obtained the phosphoramide compounds of aniline, ρ-chloroaniline, α-naphthylamine, sulfanilamide, ο-methoxyaniline,...

Phosphoramides are prepared for enzyme studies. These compounds can be easily obtained by refluxing one mole of amidodichlorophosphate and two moles of anhydrous formic acid in an anhydrous organic solvent for about three hours. The high yield and the simple procedure for isolation of the product make this method superior to those described in the literature. By this method we have so far obtained the phosphoramide compounds of aniline, ρ-chloroaniline, α-naphthylamine, sulfanilamide, ο-methoxyaniline, ρ-toluidine and benzylamine. However, this method has failed in the preparation of N-(ρ-nitrophenyl) amidophosphoric acid and N-(ρ-carboxyphenyl) amidophosphoric acid. The latter can be obtained by the reaction of amidophosphoryldichloride of ρ-aminobenzoyl chloride and formic acid.

本文提出一制备磷酰胺类化合物的新法。将一克分子二氯磷酰胺类化合物与二克分子甲酸在乾燥有机溶剂中加热回流。此法的特点在於产量高,产物容易分离。利用此法,目前已制得苯胺,对-氯苯胺,α-萘胺,对-磺酰氨基苯胺,隣-甲氧基苯胺,对-甲基苯胺,以及苯甲胺的磷酰胺化合物:但不能制得对-硝基苯胺及对-氨基苯甲酸的磷酰胺化合物。对-氨基苯甲酸的磷酰胺化合物可由N-对-氯甲酰苯基二氯磷酰胺与甲酸反应制得,对-硝基苯胺的磷酰胺则始终没有制备成功。

From 1956 to 1958, the study of the effects of day length upon the Photostage, floral curve, number of boll and the development of reproductive organs of the Sea Island cotton (Gossypium barbadense L.) was carried on at Canton. The Sea Island cotton was first introduced to Kwangtung several years ago and has since gradually become a new important economic: Plant, and the timely investigation possesses both practical and theoretical importanee. Varieties used in these experiments were Kaiyuan perennial cotton....

From 1956 to 1958, the study of the effects of day length upon the Photostage, floral curve, number of boll and the development of reproductive organs of the Sea Island cotton (Gossypium barbadense L.) was carried on at Canton. The Sea Island cotton was first introduced to Kwangtung several years ago and has since gradually become a new important economic: Plant, and the timely investigation possesses both practical and theoretical importanee. Varieties used in these experiments were Kaiyuan perennial cotton. Wenghan perennial cotton: Cháang róng no. 3,910И,2И3 and 5476И. The results of these experiments may be briefly summarized as follows: All the six varieties of Sea Island cotton are found to be short day Plants. The budding arid the flowering period may be accelerated by shortening the day length, particularly 10—12—hour day length. In the short day treatment, the first fruiting branch will appear at the lower mainstem node, the number of flowers and the boll are greatly increased and the full blooming period occurs earlier. There are differences of photoperiodic responses among different varieties. 5476И is less sensitive to thep hotoperiodie responses, while Kaiyuan perennial cotton possesses the greatest photoperiodic responses. The latter fails to produce flower in the 16—hour illumination treatment, and the flower does not appear until October when the plant is under the natural day length, while in the 10—hour illumination conditions, the length of time required from sprouting to flowering is merely 62—67 days.According to the theory of phasic development of Plants, the blooming time is generally used as a determinator in the completion of the developmental phases. The completion of Photostage is from the 20th to 45th day for Kaiyuan perennial cotton, from the 10—15th to 30th day for wenghan perennial Cotton and 910И after sprouting.The development of the reproductive organs may be accelerated by the short day length. The number of days required for the development of the floral bud is reduced, the interval between the blooming of the two flowers located at the adjacent nodes on the same fruiting branch is shortened, the plant possesses more fruiting branches at the mainstem, more fruiting nodes are found on the same fruiting branch, more extra-axillary buds grow into flowers, and almost every floral bud develops into flower, and the fiber strength and the fiber length are found to be also improved. However, if the cotton plant is located under the long day length, the bud shedding is sure to be more profuse and the developmcnt of reproductive organs is delayed. Therefore, the planting season is preferably to be earlier iu the year in order to enable the cottoU plant to secure the natural short day. The higher yield and better quality of cotton fiber will be obtained under such a condition.

(1) 海島棉是短日性作物,对光照长度的反应是敏感的。在試驗的6个品种中,以开远离核木棉的敏感性最强,文山木棉、910И、长絨三号、2И3次之,而5476И則最弱。在10小时日照下的棉株較在自然日照及16小时光照下的棉株其现蕾期及开花期均提早,第一果枝着生节位下降,开花数及結鈴数均显著增加。(2) 开远木棉在16小时下不开花,在广州地区的自然条件下要在10月后才能开花,但以10—12小时日照处理則出苗至开花仅需62—67天,而且在生育期的第一年中其开花曲綫还出現三个开花頂峯;在8小时日照下則出苗至开花所需天数为76天。(3) 以现蕾期或开花期作为发育阶段通过的指标,測得文山木棉及910И在出苗后10—15天进入光照阶段,而在出苗后30天左右完成,光照阶段的通过需要15—20天的10小时日照。(4) 測定开远木棉的光照阶段,应当以它的开花期作为指标。开远木棉在出苗后20—25天进入光照阶段,而在38—45天結束,在10小时日照下光照阶段所需天数为18—25天。(5) 短日照促进棉株生殖器官的发育,表现在果枝数的增加,果枝上果节数的增加,蕾期发育所需的天数縮短,在同一果枝上相邻两花开放間隔的天数减少,同时出現較多...

(1) 海島棉是短日性作物,对光照长度的反应是敏感的。在試驗的6个品种中,以开远离核木棉的敏感性最强,文山木棉、910И、长絨三号、2И3次之,而5476И則最弱。在10小时日照下的棉株較在自然日照及16小时光照下的棉株其现蕾期及开花期均提早,第一果枝着生节位下降,开花数及結鈴数均显著增加。(2) 开远木棉在16小时下不开花,在广州地区的自然条件下要在10月后才能开花,但以10—12小时日照处理則出苗至开花仅需62—67天,而且在生育期的第一年中其开花曲綫还出現三个开花頂峯;在8小时日照下則出苗至开花所需天数为76天。(3) 以现蕾期或开花期作为发育阶段通过的指标,測得文山木棉及910И在出苗后10—15天进入光照阶段,而在出苗后30天左右完成,光照阶段的通过需要15—20天的10小时日照。(4) 測定开远木棉的光照阶段,应当以它的开花期作为指标。开远木棉在出苗后20—25天进入光照阶段,而在38—45天結束,在10小时日照下光照阶段所需天数为18—25天。(5) 短日照促进棉株生殖器官的发育,表现在果枝数的增加,果枝上果节数的增加,蕾期发育所需的天数縮短,在同一果枝上相邻两花开放間隔的天数减少,同时出現較多的椏果,以及在一果节上常有两个鈴存在。无疑这是棉株在短日照下蕾鈴数增多,开花較集中,盛花期提早的原因。(6) 纤維品貭也受光照长度所影响。在短日照下,纤維强力及长度均增加。(7) 16小时的长光照延緩棉株的发育同时也引起棉株严重的落蕾现象,10小时的短日照促进棉株的发育并且落蕾現象极少发生。

 
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