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一、田间水稻施用稻草亚铵制浆废液(简称废液)肥效试验试验在我校涿县农场稻田进行,是继续上两年试验,内容有:(一)水稻施用废液,亚硫酸铵与尿素等肥效比较试验。在每亩施用基肥过磷酸钙100斤基础上,进一步追施等铵态氮量(16斤/亩)的不同氮肥品种的肥效比较试验。试验结果,每亩稻谷产量以施废液的921.3斤为最高。其顺序:为亚硫酸铵、硫酸铵、尿素,最后为不施氮
First, the rice paddy field rice straw wastewater (referred to as waste) fertilizer efficiency test in our school farm paddy Pixian, is to continue the last two years of testing, the contents are: (A) rice wastewater, ammonium sulfite Compared with urea and other fertilizer test. Based on 100 kg of basal diet superphosphate per acre, the fertilizer efficiency of different nitrogenous fertilizers such as ammonium nitrogen (16 kg / mu) was further traced. The test results show that the yield of rice per acre to the waste of 921.3 pounds of waste is the highest. The order: ammonium sulfite, ammonium sulfate, urea, the last is not nitrogen