查询词典 gross yield

The cotton lint yield was correlative with nitrogen concentration in fruit-branch leaf, which would cause the lint yield reduction when it was lower or higher than critical nitrogen value in fruit-branch leaf.

在大田栽培条件下，于江苏南京和河南安阳设置了棉花施氮水平试验，依据Justes的临界氮浓度稀释模型确定方法，研究棉花花后果枝叶临界氮浓度稀释模型及其与棉花产量的关系。

The cultivating models high yield cotton(lint yield 2 250kg·hm -2 )were studied in north Xinjiang,including leaf area index,photosynthetic potential,net photosynthetic rate,canopy apparent photosynthetic rate,canopy respiration rate,accumulation and distribution of dry matter etc.

通过研究提出北疆棉花公顷产2250kg皮棉的栽培生理模式，模式包括叶面积指数、光合势、净同化率、群体光合速率、群体呼吸速率、干物质积累与分配等各项生理指标。

The leaf WUE of millet was increased when root cutting in seedling stage,and only the treatment of I2D of maize increased the leaf WUE; The biomass WUE of millet and maize were increased excepting the root cutting treatments of "TM" and "sl"; At the 80% field capacity, when the root was cutted more seriously and more later,the seed yield WUE of millet were dropped; While at the 50% field capacity, the seed yield WUE of millet was increased when the root cutting is moderate in prophase,and have no reduction of output or increase the production at the same time ,while the benefit of saving water didnt evidently at the later stage root cutting.

苗期伤根处理能够提高谷子叶片WUE，而玉米伤根后仅I2D处理的单叶WUE高于对照；除TM和sl处理外，伤根处理提高了谷子和玉米生物量WUE；在土壤含水量为80%田间持水量时，随着伤根程度的加剧和伤根时间的后移，谷子子粒产量WUE下降，伤根不利于谷子WUE的提高；而在50%田间持水量时，前期伤根量适度的处理在不减产甚至增产的情况下还有助于作物子粒产量WUE的提高，而后期伤根的节水效果并不明显。

The saving-water effect of Radish and Cabbage under PFM and appropriate irrigation,and the drought-resisting of radish seedling which seed was soaked by CaCl_2 were systematicly reseached by field observation and the experiment in door.The main results were summaried as follows:The soil temperature of 0~20cm cultivated layer was increased 3-4.5℃ in early growth period was only 1℃ in late growth period by PFM;there was more water saved up to 20.84mm in 0~60cm soil layer by PFM than no PFM in the early growth period of Radish;the yield and water use efficiency of Radish in L4 were exceeded respectively 10.1% and 21.9% of that contrast, the yield and water use efficiency of Cabbage in G4 were exceeded respectively 8.7% and 26.58% of that contrast, under PFM and appropriate irrigation.

主要研究结果如下：地膜覆盖在植株生长前期耕作层平均可增温3～4.5℃，在生长后期增温幅度减小，仅有1℃左右；地膜覆盖在植株生长前期可有效的保持土壤水分，在萝卜生长前期，使0～60cm土层内多储水20.84mm；在覆膜不灌水充分利用自然降雨的条件下生产萝卜，可比裸地正常灌水萝卜增产10.1%，水分利用效率提高21.9%；覆膜只浇一水生产甘蓝，可比裸地正常灌水生产甘蓝增产8.7%，水分利用效率提高26.58%。

YaJin-4: 138-day growth period in Beijing, tight ear, red shell and red grains, 340centimeters high, stem diameter of 1.95cm, succulent and sugar Brix of 21%, light leaf disease; Per-mu stalk yield of 5300kg, per-mu grain yield of 400kg.

雅4号甜高粱，北京生育期138天，纺锤形中紧穗，红壳红粒，平均株高340厘米，茎粗1.95厘米，茎秆多汁，含糖锤度21％左右，叶病轻。

Synthesis 3,5-dihydroxytoluene by ethyl acetoacetate and diketene as material(yield 6%),by 3-methyl-4-chlorophenol and KOH as material(yield 30-40%)respectively,It was solved for product separation and purify.

分别以乙酰乙酸乙酯与双乙烯酮为原料(收率6%)、3-甲基-4-氯苯酚与氢氧化钾为原料(收率30-40%)合成了3，5-二羟基甲苯，解决了产品分离纯化问题。3-甲基-4-氯苯酚路线进行了中试，中试收率为20%。

This paper is one of a series of reports on the genetic improvement of cotton varieties in the Yangtse valley in China since 1950s, the purpose of which is to study the genetic improvements on yield and yield components (bolls per plant, boll size and lint percentage).

本文是我国长江流域棉区棉花品种遗传改良研究的系列报道之一，目的在于探讨建国以来我国长江棉区棉花品种在产量和产量组分性状上遗传改良的成效。

Neutron yield, angular distribution and total yield of D-Be reaction with thick target were measured on the 4.5 MV Van de Graaff accelerator at Peking University with deuterons at the energies from 0.35 MeV to 2 MeV.

能量在3 MeV以下厚靶D-Be反应的中子产额实验数据至关重要，但较为缺乏。

Then the secondary electron emission yield of MgO film were measurement on the dynode structures. We successfully demonstrated that primary electron energy effect the curve of SEE yield according to previous study. We found that the magnitude of the secondary electron em....

驱动的原理是以集热板吸收太阳热能，透过热管快速传递热量的特性将收集到的热能快速而高效的传递到远端的散热鳍片，鳍片温度上升高后，以自然对流的方式驱动鳍片周遭的空气上升，进而使建筑物内的空气来递补，。。。。

When processing heavy feedstocks, the light oil yield and total liquid yield were more than 66% and more than 80%, respectively.

在催化裂化原料较重的情况下，轻质油收率保持在66％以上，液体收率保持在80％以上。

This paper designs the communication system of radio telescope FAST.

针对500m口径球面射电望远镜FAST分布式控制系统的特点完成了其通信系统的设计。

Political sheep's step-by-step a large number of fossils unearthed in the county soil Ma Ali after rural village in the middle of sallow pelitic siltstone.

步氏和政羊化石大量出土于广河县阿力麻土乡后山村，产于灰黄色泥质粉砂岩中。