We must protect primary farmland, keep the area sown to grain stable, improve the structure of grain varieties grown and increase the per unit area yield of grain.
要保护好基本农田，稳定粮食播种面积，优化粮食品种结构，着力提高粮食单产。
To test reliability of the simulated program, ventilation drying tests on maize and rice under certain drying conditions were conducted by using the grain ventilation unit.
为了验证模拟程序的可靠性，在一定干燥条件下利用自制的谷物通风干燥装置对玉米、稻谷做了通风干燥试验。
Grain orientation within the intertidal beach unit is characteristically more-or-less normal to the coastline.
在潮间海滩单位内，颗粒排列方向的特点是大体上垂直于海岸线。
Take unit standard grain as channel, we can ascertain converted coefficient, and realize quantity-quality balance of land requisition-compensation.
以单位标准粮为桥梁，确定耕地质量数量折算系数。从而实现耕地占补的数量——质量型平衡。
The results showed that with the increase of cleanness of the melt, the number of grain per unit volume increased at first, and then decreased.
证明随着熔体洁净度增大，单位体积中的晶粒数将先增加，然后减少。
Four components contribute to rice grain yield including the panicles per unit area, the number of spikelets, the percentage of, and the weight of ripe grains.
四个水稻籽粒产量构成因素为单位面积穗数、小穗数、成熟籽粒百分数和成熟籽粒重量。
And it was more significant to achieve higher yields by increasing grain number per spike than by enhancing spike number per unit area.
通过增加穗粒数来实现高产比增加单位面积穗数意义更大。
We will effectively keep the area planted with grain crops stable, focus on increasing the yield per unit area and optimizing the variety mix, and increase the country's grain production capacity.
我们要切实稳定种植面积，着力提高单产，优化品种结构，推进全国新增粮食生产能力建设。
The Times of contact of teeth with a grain ear in the threshing process is considered for explaining the performance and capability of the threshing unit.
脱粒过程中，谷穗与弓齿的接触数在一定程度上反映脱粒装置的性能和能力。
This paper presents a new mathematical model for calculating the separating rate of the concave in grain threshing unit.
本文提出了一种新的脱粒装置凹板分离率的数学模型，并将其与原模型及实验数据进行了分析比较。
Increasing yield level per unit area is forever theme for rice breeding aim, and advancing photosynthesis efficiency is one of key factors for improving grain yield.
提高单位面积的产量是水稻育种目标永恒的主题，提高光合作用效率又是提高产量的关键因素。
An encapsulated grain fertilizer with high nucleation ratio is produced in an industrial production unit, and the quality of the product conforms to the requirements of the GB15063-2001 standard.
在工业生产装置上生产出成核率较高的包裹型口肥，产品质量符合GB15063- 2001标准要求。
The result indicates that the discharge per unit width, the sediment concentration, the grain size of sand influences the depth of scour hole.
试验结果表明：浑水水流的单宽流量大小、含沙量的多少以及含沙粒径的变化都对冲刷坑深度有一定的影响。
The grain-leaf ratio is a comprehensive trait estimating photosynthetic productivity of per unit leaf area.
粒叶比是衡量单位叶面积光合生产力的综合性状。
The results indicated that the grain per spike, seed setting rate, spikes per unit area and thousand grain weight had great contribution to the yield, especially grain per spike and seed setting rate.
结果表明：每穗粒数、结实率、单位面积穗数与千粒重对优质稻产量形成贡献较大，尤其是每穗粒数、结实率；
Since 1987, late rice is planted in extensive area. The meteorological factors influencing the variation of grain yield per unit area from 1987 on differ obviously with those before 1987.
1987年大面积种植单季晚稻以来，影响粮食单位面积产量变化的气象条件与1987年之前有着明显的差异。
In this 50 years, grain crops output, the grain crops sown area and the yield per unit of area and the temperature are obviously related, but they are slightly correlative with the precipitation.
近50年的粮食作物产量、粮食作物播种面积和单位面积产量与气温均呈明显的正相关，而与降水的相关性很差。
A unit of measure equal to the width of a grain of barley, or about!
长度单位一种测量单位，等于一个大麦粒的宽度，或约！
C. With a relatively stable cultivation area, China can achieve its desired total grain output target if the annual average increase rate of per unit yield is 1%.
在播种面积相对稳定的前提下，只要粮食单产年平均递增1%，就可以达到预期的粮食总产量目标。
Under limited thermo-unit conditions, keeping optimum ear Numbers per hectare, increasing ear grain Numbers per ear and remaining grain weight were important for high yield.
在有限光热资源条件下，保证穗数、主攻穗粒数、稳定千粒重是实现夏玉米高产的主要途径。
In 1959, various factors such as reduction of sown areas, less yield per unit area and natural disasters contributed to the decrease in grain output.
1959年开始，由于播种面积减少、单产下降、自然灾害等原因，粮食产量连年下滑。
The U type second time grinding unit is installed at the bottom of the grinding chamber to increase the number of material pounding and make the grain size more homogeneous.
粉碎室底部设置“U”型二次粉碎机构，提高物料打击次数， 粉碎粒度更均匀。
Grain yield per unit area increased continually during the past near 50 years in HuangHuai -hai plain, and its increasing speed in recent years still kept higher than the average of all the country.
建国以来黄淮海平原粮食单产持续增长，近年来仍然高于全国同期单产增速。
Grain yield per unit area increased continually during the past near 50 years in HuangHuai -hai plain, and its increasing speed in recent years still kept higher than the average of all the country.
建国以来黄淮海平原粮食单产持续增长，近年来仍然高于全国同期单产增速。
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