crop yield

• The shading and its effect on crop yield under poplar - crop intercropping system
  杨粮间作系统林木遮荫面积和株行距研究
• Maybe more information on parameters of maximum crop yields need be generated
  也许要有更多的最高作物产量参数的信息。
• Development of crop yield and water use efficiency in fengqiu county , china
  封丘地区粮食生产水分利用效率历史演变及其潜力分析
• Nitrogen fertilizer distribution depends on the soil fertility and the crops yield goals
  氮肥分配取决于土壤肥力和作物产量目标。
• In addition , the crop yield increased better with increasing mulching quantity
  试验表明随秸秆覆盖食的增加，作物增产效果越明显。
• This provides useful information on factors responsible for maximizing single crop yields
  这提供了影响一季作物最高产量的因素的有用信息。
• Primary application of noaa avhrr in estimating of the spring crop yields in the low - latitude altiplano
  资料在低纬高原小春作物估产中的初步应用
• Effect of continuous fertilizing for shajiang black soil on crop yield and soil nutrien content
  砂姜黑土连续培肥对作物产量和土壤养分含量的影响
• Analysis of spatial variability of soil characteristics and crop yield under subsurface drainage
  暗管排水条件下土壤特性和作物产量的空间变异性分析
• Determination of drainage criteria considering the increase of crop yield and environment protection
  考虑作物产量和化肥流失时排水设计标准的确定方法