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近几年,国外农业对秸秆肥料的利用方兴未艾。在民主德国每公顷施入5吨秸秆、土壤中增加氮20～35斤、磷5～7公斤、钾60～90公斤、钙10～15公斤、镁4～6公斤、硫5～8公斤……。联邦德国估计每公顷土壤里施入5吨秸秆,所达到的营养成份的肥料价值(35公斤 N、15公斤 P_2O_5、120公斤 K_2O、20公斤 CaO 及30公斤 MgO)、约100马克。根据法国科学家们的计算,土壤中每公顷施入5吨的秸秆,可获得500公斤/公顷的有机物质。留茬地一
In recent years, the utilization of straw fertilizer by foreign agriculture is in the ascendant. In the German Democratic Republic of Germany applied per hectare of 5 tons of straw, the soil increased by 20 to 35 pounds of nitrogen, phosphorus 5 to 7 kg, potassium 60 to 90 kg, calcium 10 to 15 kg, magnesium 4 to 6 kg, sulfur 5 to 8 kg ... .... The Federal Republic of Germany estimates that 5 tons of straw are applied per hectare of soil and that the fertilizers (35 kg of N, 15 kg of P2O5, 120 kg of K2O, 20 kg of CaO and 30 kg of MgO) of the nutrients reached are about 100 marks. According to French scientists, 500 kg / ha of organic matter can be obtained by applying 5 tons of straw per hectare in the soil. Stubble field one