A 2009 World Bank study found that by increasing soil fertility, a typical flood increases agricultural output in the year after it strikes (though output falls in the year it occurs).
一份2009年的世界银行的报告指出，通过增加土壤的肥沃度，一次典型的洪水在其发生的次年会增加农业产出(虽然在其发生当年产出下降)。
The straw still can increase the soil organic matter, improve the soil structure, increasing soil fertility to return the field, can make the crop grow more stalwart, the output is higher.
秸秆还田还能增加土壤有机质、改良土壤结构、增加了土壤肥力，能使作物生长更健壮，产量更高。
The negative correlativity between the yield and the protein content of spring wheat grain were changed by increasing soil fertility and harmony the correlation fertilizer and soil water content.
籽粒产量和蛋白质含量之间的负相关关系可以通过培肥地力和合理的肥水运筹加以协调。
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