Implementation of the appropriate yield - protection factors insures that the maximum crop yield is harvested 恰当的产量保护措施能保证我们收获最高产量。
Effects of urban refuse rude compost on soil microbial numbers and crop yields of the scrap sandpit 城市垃圾粗堆肥对废沙坑地土壤微生物数量及作物产量的影响
But if used properly , it can increase crop yields and improve the product quality considerably 但是如果施用得当，可以大幅度地提高产量，明显地改善产品品质。
Diseases reduce crop yield through a variety of mechanisms that are too varied to be discussed in this paper 病害造成减产的机理千差万别，本文不能一一详论。
Effect of long - term located organic - inorganic fertilizer application on fluvo - aquic soil fertility and crop yield 无机肥长期配施对潮土土壤肥力和作物产量的影响
It is known that fertilizer , plant variety and plant population are important factors which affected crop yield 众所周知，肥料、品种、密度是影响产量的重要因素。
But crop yield in china is not as high as possible and needs to catch up with the pace of growing human population 但中国作物产量仍有待提高，必须跟上人口发展的步伐。
During phase 1 of the project , research was directed at improving water use efficiency and crop yields 受当时中国生产政策的影响，项目一期的目标是提高河北低平原的农业生产水平。
Chemical fertilizer is the important measure of improving crop yield and is the main mark of modern agricultural civilization 摘要化肥是促进农业增产的重要举措，是农业现代文明的重要标志。
Effects of ridge making of green manure and return of straws into soil on crop yield and soil fertility in guizhou karst mountainous region 贵州喀斯特山区旱地绿肥聚垅秸秆还土的培肥增产效应研究
