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前期施氮
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  nitrogen application during early growth stage
     Effects of Nitrogen Application During Early Growth Stage on the Tillers and the Tiller-Panicle Turnover Rate of Two-Line Hybrid Rice
     前期施氮对二系杂交水稻分蘖及其成穗的影响
短句来源
  “前期施氮”译为未确定词的双语例句
     The results obtained were as follows: ① The rice yield ranked from high to low in different proportion of nitrogen treatment as follows 6:4,5:5,7:3,4:6 and 3 : 7. When the ratio of nitrogen applied at early stage to the total nitrogen was 58. 99%, yield was the highest;
     结果表明:①依产量从大到小排序,前中期氮肥施用比例依次为6:4、5:5、7:3、4:6、3:7,以前期施氮量占总施氮量为58.99%时产量最高;
短句来源
     With the increase of proportion nitrogen-application at the earlier stage, head rice rate and protein content drop, Chalkness degree and amylose starch content increased, and glue consistency presented downward trend after rising first.
     随着前期施氮占总施氮比例的增加,小、中、大苗水稻稻米的整精米率、蛋白质含量下降,垩白度、直链淀粉含量增加,而胶稠度呈先上升后下降的趋势。
短句来源
     In different treatments,early appiocation of nitro-gen fertilizer was efficient for the formation of grain yield,and grain protein contern wassignificantly increased by foliar-spraying of nitrogen fertiliaer at anthesis。
     生育前期施氮有利于籽粒产量形成,开花期叶面喷施氮肥显著提高籽粒蛋白质含量。
短句来源
     Field experiment dealing with the effects of different fertilizers and irrigatons on the yield of rice and its physiological mechanism were conducted in Hangzhou during 1988-1989. Under equal nitrogen supplies, the cultured technigues of increasing proportion of N supplies in late growth stage increased production.
     1988~1989年的研究表明,水稻在总施肥量相同情况下,适当减少前期施氮比重,增加中后期施氮比重有利于增产.
短句来源
     When the amount of nitrogen fertilizer was determined, early app-lication with a high proportion could increase the tillers of pre-winter and theproductive spikes.
     当施氮量已定时,增加小麦生育前期施氮比例,可增加冬前分藥和有效穗,每穗粒数虽略有减少,但总粒数增加,因而产量较高。
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  相似匹配句对
     3 Effects of different nitrogen applied level on nitrogen
     ?
短句来源
     STUDY ON THE EFFECT OF NITROGEN APPLICATION ON WENZHOU MANDARIN
     温州蜜柑效应的研究
短句来源
     Effects of Nitrogen-potassium Fertilizer Formula on the Growth and Early Productivity of Tomato Seedlings
     钾肥配对番茄幼苗生长及前期产量构成的影响
短句来源
     Effects of Nitrogen Application During Early Growth Stage on the Tillers and the Tiller-Panicle Turnover Rate of Two-Line Hybrid Rice
     前期对二系杂交水稻分蘖及其成穗的影响
短句来源
     Nitrogen application inhibited the synthesis of protein at early stage and this effect died away with the development of seeds.
     抑制籽粒形成前期蛋白质的合成,随着籽粒形成,抑制现象逐渐消逝。
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The present study conducted in a light cinnamon soil in 1980-1982 with a split-plot design and 3 replications,was undertaken to determine the effect of nitrogen and phosphorus on the yield and quality of winter wheat.The results showed that phosphorus increased grain yield significantly more than nitrogen did.The ratio of N/P_3O_5 of 1∶1 or P_3O_5>N was better than other ratios,because phosphorus could significantly increase the number of tillers and spikes,and decrease tiller abortion.Compared with no-phosphours...

The present study conducted in a light cinnamon soil in 1980-1982 with a split-plot design and 3 replications,was undertaken to determine the effect of nitrogen and phosphorus on the yield and quality of winter wheat.The results showed that phosphorus increased grain yield significantly more than nitrogen did.The ratio of N/P_3O_5 of 1∶1 or P_3O_5>N was better than other ratios,because phosphorus could significantly increase the number of tillers and spikes,and decrease tiller abortion.Compared with no-phosphours treat- ments,phosphorus shifted the periods of heading and grain filling to an earlier time,but resulted in a prematuse decay.However,the premature decay could be avoided by appling both nitrogen and phosphorus.Furthermore,pho- sphorus increased plant hight without decrease in harvest index. Nitrogen fertilizer increased grain protein content significantly as com- pared with noonitrogen treatments.However,differences between different rates of N applied were not significant.Phosphorus fertilizer decreased grain protein content under some circumstances,as a result of early application and light rate of N. It was also founded that foliar application of N at blooming was effe- ctive on increasing grain protein content,but the increment depended on the rate of N applied before blooming.

在两个生长季和含全氮0.09—0.10%、碱解氮55—93ppm、速效磷11—20ppm 的轻质褐土上,用裂区设计研究了氮磷肥用量及其配比对冬小麦产量形成和蛋白质含量的影响。结果表明,磷肥的增产效果大于氮肥,氮磷(P_2O_5)肥比例以1∶1或磷稍高于氮肥时增产效果更好。磷肥显著增产的主要原因是促进分蘖,减少分蘖缺位率,增加亩穗数。磷肥对粒重的有利作用表现在促进早出穗早灌浆,但易引起早衰,若与氮肥配合施用可以纠正这个缺点。磷肥显著增加株高,但并不降低收获指数。施氮比不施氮能显著提高籽粒蛋白质含量,但施氮不同水平之间差异不显著。在一次试验中,在施磷显著增产情况下降低了蛋白质含量,这与施氮量不大和施氮期较早有关。蛋白质产量主要取决于籽粒产量,与蛋白质含量的关系不密切。开花期叶面喷氮对提高蛋白质含量的效果取决于开花前土壤施氮量,前期施氮愈少,后期喷氮的效果愈大。

The studies were carried out in 1988~1989 on the campus of NEAC.The pot exper-iment consisted of seven fertilization treatments (T1:control;T2:fertilizer at seeding;T3:fertilizer at 3-leaf stage;T4:fertilizer at anthesis;T5:3/4 T2+1/4 T3;T6:3/4T2+1/4T4;T7:1/2T2+1/4T3+1/4T4)。The objectives of the experiment were(a) the effect of nitrogen application time on the utilization of ~(15)N-labeled urea.(b) themeasure of fertilization for increasing protein yield perunit area in spring wheat inHeilongjiang province.During...

The studies were carried out in 1988~1989 on the campus of NEAC.The pot exper-iment consisted of seven fertilization treatments (T1:control;T2:fertilizer at seeding;T3:fertilizer at 3-leaf stage;T4:fertilizer at anthesis;T5:3/4 T2+1/4 T3;T6:3/4T2+1/4T4;T7:1/2T2+1/4T3+1/4T4)。The objectives of the experiment were(a) the effect of nitrogen application time on the utilization of ~(15)N-labeled urea.(b) themeasure of fertilization for increasing protein yield perunit area in spring wheat inHeilongjiang province.During the process of plant growth and development,the change of soil nitrogen had asimilar trend to that of fertilizer nitrogen in different organs of spring wheat plants,of totalnitrogen accumulation,three fourths were derived from the soil,and the rest fromfertilizer.Moreover,at maturity,the efficiency of fertilizer utilization was raised by delayingand increasing fertilizer application.The effects of nitrogen application time on the increase of grain protein content were sig-nificant (F=31.3>F=4.22) but not on grain protein yied.Grain protein content was in-creased by delaying nitrogen appilcation.In different treatments,early appiocation of nitro-gen fertilizer was efficient for the formation of grain yield,and grain protein contern wassignificantly increased by foliar-spraying of nitrogen fertiliaer at anthesis。

春小麦生育期间植株各器官土壤氮与肥料氮变化趋势基本一致。各器官吸收总氮量中,土壤氮约为肥料氮的2~3倍,肥料氮对土壤有激发效应。肥料利用率随氮肥施用期的后移和施用量的增加而逐渐提高。氮肥不同施用期对提高籽粒蛋白质含量有极显著效应(F=31.3>F_(0.01)=4.22),籽粒蛋白质含量随氮肥施用期推迟而显著增加;对籽粒蛋白质产量的效应则差异不显著。生育前期施氮有利于籽粒产量形成,开花期叶面喷施氮肥显著提高籽粒蛋白质含量。

Field experiment dealing with the effects of different fertilizers and irrigatons on the yield of rice and its physiological mechanism were conducted in Hangzhou during 1988-1989. Under equal nitrogen supplies, the cultured technigues of increasing proportion of N supplies in late growth stage increased production. The main reason was that population density in the middle and late growth stages was relatively little, so it improved the growth condition of individuals, and retarded the senescence of lower leaves,...

Field experiment dealing with the effects of different fertilizers and irrigatons on the yield of rice and its physiological mechanism were conducted in Hangzhou during 1988-1989. Under equal nitrogen supplies, the cultured technigues of increasing proportion of N supplies in late growth stage increased production. The main reason was that population density in the middle and late growth stages was relatively little, so it improved the growth condition of individuals, and retarded the senescence of lower leaves, consequently, the function of the leaves was strengthened, chlorophyll content and nitrogen concentration in leaf increased, and availed to accumulate photosynthesis, as a result, the number of grains per panicle, percentage of filled grains and 1 000 grain weight increased. Deep-water irrigation during peak of tillering controlled tillering effectively, the proportion of effective tillering to total tillering tend to raise. Consequently, it had the good physiological efficiency abovementioned. On the other hand, although deep-water irrigation significantly increased amound of reducing substance during irrigation, it had no bad effect on root. The effects of deep-water irrigation on soil fertility and growth of rice were also discussed.

1988~1989年的研究表明,水稻在总施肥量相同情况下,适当减少前期施氮比重,增加中后期施氮比重有利于增产.增产原因主要是无效分蘖显著减少,中后期水稻群体适中,个体生育健壮,颖花退化减少,叶片含氮率、叶绿素含量、老化指数提高,最终达到稳穗、增粒、增重目的.当水稻茎蘖数达到计划穗数的80%时,通过十天左右深水控蘖,分蘖明显减少,成穗率显著提高,因而也具有上述良好的生理效应.深水控蘖后短期内提高了土壤还原物质总量,但对根系活力未见不良影响.作者还就深灌对土壤肥力和水稻生育的影响等问题作了探讨.

 
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