Fertilizer input for this heavy burden on the population and the economy of less developed countries is particularly important.
化肥投入对于我们这个人口负担重，而经济又欠发达的国家来说尤为重要。
The sustainability index indicated that, the sustainability of soil N was much more dependent on chemical fertilizer input, while P and K were relied on organic fertilizer.
之间；通过可持续性指数的分析得出，土壤N素养分的可持续性对化肥的依赖性较大，而P、K养分的可持续性则对有机肥的依赖性更高。
Previous researchers through conventional field observation methods had proved that to increase fertilizer input was the key measure to enhance soil carbon sequestration and crop yield-increasing.
前人通过实地观测的常规方法，证明了增加肥料投入是土壤增汇、粮食增产的关键措施。
A study is made of the evolution of the input quantity and structure of the fertilizer potassium resource on farmland in Henan Province.
对河南省农田肥料钾资源投入数量和结构的演变状况进行了研究。
The fertilizer treatment of N75P200K50 also has the best economic benefit with a ratio for input and output of 1 to 2.2 and a NPV of 25.96%.
以最佳施肥处理N75P200K50的经济效益最好，投入与产出比为1∶2．2，与施肥量最高的处理相比，投入少，产出大，内部收益率为25．96％。
The reason of the increase includes the following aspects: the improvement of production technology, the increase of labour, and the input of fertilizer, while lack of capital is its main restrict.
清代皖南平原水稻亩产量的上升可以从生产技术的改进、劳动力使用的增加、肥料投入的增加等三方面得到体现，但资本投入的匮乏是水稻单产提高的重要制约。
Two grades of yearly input of organic fertilizer has been suggested for the organic matter balance of medium or low productive soil respectively.
提出了中、低产田在各保持两个量级有机质平衡对，每年应投入各有机物料的数量。
The major input of N was the N of fertilizer and manure and the percentage was 58.85% and 25.32% of the total input respectively.
农田生态系统中氮素养分主要的输入项是化肥和有机肥，分别占总投入氮量的58.8%和25.3%。
The major input of N was the N of fertilizer and manure and the percentage was 58.85% and 25.32% of the total input respectively.
农田生态系统中氮素养分主要的输入项是化肥和有机肥，分别占总投入氮量的58.8%和25.3%。
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