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一、试验目的研究秋季深施肥的增产效果,为改进耕作施肥方法,提高施肥效益,实行早春顶凌播种提供依据。二、栽培管理试验田前茬高粱,肥力不够均匀,中等水平。土质沙壤,属于初步改良的熟荒地。试验品种斗地一号。播前经过磷酸二氢钾闷种。3月6日用六行条播机采取18厘米+7厘米双行靠播种。每亩播量50万粒。每亩带种肥过磷酸钙16斤,尿素5.3斤。苗期人工、药剂除草各一遍。共淌六水。淌水时间依次为:8/5、15/5、29/5、18/6、2/7、10/7,Ⅲ、Ⅳ重复于22/5机播旱追尿素30斤/亩,I、Ⅱ重复于8/5头水前撒追碳铵80斤。
First, the purpose of the experiment Study on the yield-increasing effect of deep fertilization in autumn, in order to improve the tillage and fertilization methods, improve fertilizer efficiency, the implementation of early spring top Ling sowing basis. Second, cultivation and management trials before crop sorghum, fertility is not enough uniform, medium level. Soil sandy soil, belonging to the initial improvement of the wasteland. Test varieties Doudian. Before sowing through the dihydrogen phosphate bored species. March 6 with a six-row drill to take 18 cm +7 cm double row by planting. 500,000 grains per acre Per acre with superphosphate fertilizer 16 kg, 5.3 kg of urea. Seedling artificial, herbicides over again. A total of six streams. The tidal time was 8 / 5,15 / 5,29 / 5,18 / 6,2 / 7,10 / 7, Ⅲ and Ⅳ, Ⅱ repeated in 8/5 before the water to pay 80 kg of ammonium bicarbonate.