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peach
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    Effect of PGZCJ on peach fruit
    苹果增产菌对果实的影响
短句来源
    Experimental Study on Distributed Difference of Anisotropic Firmness and Sugar Content of Peach
    鲜坚实度和糖度分布差异的实验研究
短句来源
    RAPD analysis of different forms of the green peach aphid
    蚜不同蚜型DNA多态性的RAPD研究
短句来源
    Study on Industrialized Vegetable Peach Aphid Control by Aphidius gifuensis
    烟蚜茧蜂控制工厂化蔬菜蚜的研究
短句来源
    Study on the Structure and Histology of Arthropod Community in Peach Orchards
    园节肢动物群落的结构和组织学研究
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  桃树
    The soilin the peach yellowing area is rich in SiO2 and Al2O3 and poor in mobile elements so that the total volnme of the migrated elements is obviously less than that of normal soil,influences the absorption of, thepeach to other elementS,and leads the peach to yellowing.
    桃树黄化区土壤富SiO2和Al2O3,而贫活性元素,致使可迁出离子总量远远小于正常土壤,并影响桃树对其他元素的正常吸收,导致黄化。
短句来源
    The densities of nematodes in verticaldistribution in peach rhizosphere were the highest at the soil depth of 10cm and 21cm andthese in pear rhizosphere were at 21cm.
    从垂直分布看,桃树根际以10cm和21cm深土层线虫总数量最多。 寄生线虫主要在0~15cm处。
短句来源
    The results showed that parasitic nematodes in peach tree rhizosphere were 9.3%saprophytic nematodes 51.5% sarcophagous nematodes 24.8%, dorylaimida nematodes14.4%, and that of the total of nematodes and parasitic nematodes in pear tree rhizospherewere 8.8%, saprophytic 51.6%, sarcophagous 22.6%, dorylaimida nematodes 18.0%,Four / genera of parasitic nematodes were identified in.
    本文对桃树(PrunuspersicaStokes)、梨树(Pyrussp.)根际线虫研究结果表明:桃树根际线虫中,寄生类占线虫总数量的9.3%,腐生类占51.5%,捕食类占24.8%,矛线类占14.4%。 梨树根际线虫中,寄生类8.8%,腐生类51.6%,捕食类22.6%,矛线类18.0%。
短句来源
    The densities ofnematodes in level distribution in peach tree rhizosphere were the least at the distance of 60cm and those in pear rhizosphere at 50cm.
    从水平分布看,梨树根际线虫在距根基部50cm处稀少,桃树根际线虫在60cm左右处少。
短句来源
    Five karyotypes were found in natural populations of green peach aphids, Myzus persicae (Sulzer) from peach, rape and tobacco, i.e., normal karyotype 2 n =12 (NK), 2 n =12 with autosome 1 and 3 translocation (T 1-3 ), 2 n =13, 2 n =11 and 3 n =18 (autosomal 1 and 3 translocation).
    对采自桃树、油菜和烟草上的烟蚜的核型研究表明 :在红、黄绿两种体色的烟蚜中发现 5种核型 ,即2n =12 ,正常 ; 2n =12 ,A1与A3 易位 ;
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  “peach”译为未确定词的双语例句
    RAPD-PCR ANALYSIS OF POPULATION DIFFERENTIATION OF GREEN PEACH APHID IN CHINA
    我国烟蚜种群分化的RAPD分析
短句来源
    2 species of neutralities representing 2 families in peach orchards.
    中性类2种,分属于2科。
短句来源
    Parasitic nematodes in peach rhizosphere were dis tributed at the depth of 0-15cm and those in pear rhisophere at 15-20cm.
    梨树根际也以21cm土层线虫总数量最多,寄生线虫主要集中在15~20cm土层中。
短句来源
    SIMULATION OF ELEMENT MIGRATION IN PURPLE SOIL AND ITS CORRELATION WITH PEACH YELLOWING IN THE PEACH ORCHARD OF LONGQUANYI DISTRICT, CHENGDU
    成都龙泉驿紫色土元素迁移及其与桃树黄化关系的模拟
短句来源
    Effect of Green Peach Growth and Fruit by Applying Different Growth Regulating Agents and Compound Fertilizers
    不同生长调节剂、配方施肥对青桃生长与结果的影响
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  peach
When transferred onto plum and peach, the spider mite adapted to the new hosts in the second generation; however, on cherry and apricot, it adapted in the third generation.
      
This was particularly observed under stress plant growth conditions on phytotoxic peach substrates.
      
Quantitative assessment of the infection rate of the entomophthoraceous fungus,Zoophthora anhuiensis against the green peach aph
      
A two-step method was developed to quantitatively assess the infection rate of the entomophthoraceous fungus,Zoophthora anhuiensis (Li) Humber, on the green peach aphid,Myzus persicae (Sulzer).
      
Recoveries for each pesticide added to a peach sample were obtained after applying different extraction systems.
      
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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。

Zai-plum or drunken-plum is oue of the aucient varieties of Chinese plum(Prunus salicina Lindley).It is a famous fruit in Zhejiang province.The appearance of this variety had dated back of the eastern Zhou and was listed as article of tribute in the Spring and Autumn period.The fruit is large in size,sweet in taste and purple-red in colour.It has tender and juicy pul-pand it is of excellent quality.There has been different opinions.As to where Zai-plum came into being.Some takes the Clean-faced Temple in Jia...

Zai-plum or drunken-plum is oue of the aucient varieties of Chinese plum(Prunus salicina Lindley).It is a famous fruit in Zhejiang province.The appearance of this variety had dated back of the eastern Zhou and was listed as article of tribute in the Spring and Autumn period.The fruit is large in size,sweet in taste and purple-red in colour.It has tender and juicy pul-pand it is of excellent quality.There has been different opinions.As to where Zai-plum came into being.Some takes the Clean-faced Temple in Jia Xing as its place of origin and others the village of Peach-garden in Tong Xiang and still others hold that it was introduced from the South.This paper is bared on a great deel of historical material which provide evidence that Zai-plums' place of origin is the village of Peach-Garden in Tong Xiang(it was formerly called the City of Zai-plum).

携李,亦名醉李,为中国李(Prunus salicina Lindley)的古老良种,系浙江省传统名果。本品种始见于东周,春秋时代列为“贡品”。果大味甜,色紫红,肉柔软多汁,品质极佳。 关于榜李的原生地,人各异说。有说起源于嘉兴净相寺;也有说出自桐乡桃源头;还有说由僧人自南方引来。 根据作者考证,认为槜李原生于桐乡县的的桃园头(古槜李城)之说较为确切。

Applying the' black box' concept of modern control theory, a dynamical simulation method of directly determining the water up-take by plants was advanced,to avoid the difficulties in estimating root distributions,while trying to determine water use. And, following the law of iterative addition of linear systems, the very complex SPAC system was broken down into two much simpler systems to make solutions to the problem and the related experiments more convenient and much easier.The simulation method was applied...

Applying the' black box' concept of modern control theory, a dynamical simulation method of directly determining the water up-take by plants was advanced,to avoid the difficulties in estimating root distributions,while trying to determine water use. And, following the law of iterative addition of linear systems, the very complex SPAC system was broken down into two much simpler systems to make solutions to the problem and the related experiments more convenient and much easier.The simulation method was applied to estimate water use by (peach) trees. A modified water up -take model (function) and its parameter identification were suggested. The validities of the simulation method and the modified water up-take model were verified.

本文根据现代控制理论中“黑箱”理论的思想,提出了一种直接采用土壤水瞬态运动模拟方法求得吸水项的方法,从而省去了试图估计根系分布的困难。并且在估计方法中采用线性系统的叠加原理,对SPAC系统进行分解与叠加,将异常复杂的SPAC系统的求解过程简化为对几个相对简单得多的子系统的求解,从而使得相应的求解与验证实验更加简单和方便。给出了采用交替方向的P—R有限差分二维模拟算法的计算表达式。并在估计桃树吸水模型中得到应用。提出了修正的桃(果)树吸水模型(函数)及其参数估计方法。对方法及模型的正确性进行了验证。

 
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