• 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.

    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

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  • The number of panicles per unit area was the most important yield components in determining final yield.

    单位面积决定最终产量重要的产量构成因素

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  • Ways of improving crop yield per unit area and the countermeasures.

    提高作物单产途径对策

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  • This thesis study one of important factor in per unit area yield travel speed measure device and his sensor choice and relevant error analysis of form especially.

    论文重点是对单产重要因素之一行驶速度测量装置及其传感器形式选择相关误差分析进行了研究。

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  • 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.

    提高单位面积产量水稻育种目标永恒主题提高光合作用效率又是提高产量的关键因素

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  • But many defects exist in the pear industry such as unreasonable varieties structure, low yield per unit area, the shortage of high quality fruits, poor benefit and so on.

    但是整个产业结构来说还存在不少问题,品种结构不合理单位面积产量优质果少,经济效益差等。

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  • The paper puts forward the quantization formula by regarding fictitious yield per unit area as one way of contrasting and evaluating the economic results of aquaculture.

    本文提出虚拟单位产量作为比较评价水产养殖经济效果一种方法,给出了量化公式

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  • An important method of increasing rice yield per unit area is to improve the rice-planting mechanization lever and use advanced planting technology.

    提高水稻单产一项重要措施提高水稻种植机械化水平,即采用先进的种植技术

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  • Faced to tillage land resource reducing and large proportion of hilly fields, increasing yield per unit area must be done to meet the need of increasing population at present and in the future.

    辽宁省耕地资源少、坡耕地重大,满足现在和将来日益增长人口需要必须在保护好现有耕地面积基础上,提高单产

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  • Tea crop area, harvesting area, per unit area yield, gross output, and the total agricultural output value of the tea industry are analyzed and assessed by using regression model analysis.

    运用回归模型茶叶种植面积采收面积、单位面积产量总产量、茶叶农业总产值进行分析预测。

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  • According to investigate, the element zinc is very poor in soil of most area at present, which has affected crops to raise the per unit yield their disease resistance.

    根据调查目前多数地区土壤元素严重贫乏影响作物单位面积产量提高和抗病性

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  • 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单位面积、小穗数、成熟籽粒百分数成熟籽粒重量

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  • Piles foresees accurately increases 30% the alfalfa or the corn straw, but effectively enhances the yield per unit of area.

    中添加30%苜蓿草玉米秸杆有效地提高单位面积产量

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  • Because of the diminishing opportunity to expand cultivated land, researches have been mostly focused on the rise of yield per unit area.

    由于扩大耕地面积可能性越来越小,研究主要集中提高单位面积产量

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  • The main reason resulting in higher yield was that the higher number of total spikelet increased per unit area under the condition of appropriate seedling Numbers, plant spacing and row spacing.

    获得高产原因主要适宜行距配置插植苗单位面积上获得了较高的群体颖花量。

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  • 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气象条件1987年之前有着明显差异

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  • 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.

    50粮食作物产量、粮食作物播种面积单位面积产量气温均呈明显的正相关降水相关性很差。

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  • 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%.

    播种面积相对稳定前提下只要粮食单产平均递增1%,就可以达到预期的粮食总产量目标

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  • 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。

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  • 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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  • 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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