摘要
采用小区试验和室内化验相结合的方法研究高纬度地区氮肥运筹体系对水稻群体素质和产量构成的影响。结果表明:处理1产量最高,为9141.0kg/hm2,比处理6增产31.3%,但是风险较大,生产上不建议使用;处理2、处理3公顷产量分别为9054.0kg、8994.0kg,分别比处理6增产30.0%、29.1%,变化趋势与2006年一致;土壤基础生产能力为6964.5kg/hm2;生产100kg稻谷吸氮量变化范围在1.71～1.78kg之间,平均1.75kg,比2006年试验结果低0.04kg;土壤供氮量为123.9kg/hm2;氮肥利用率32.3%;当目标产量为9000kg/hm2时,公顷需纯氮104.0kg,比2006年低10.7kg/hm2。
It is studied that nitrogen fertilizer plans and manage of kongyu 131, The results shows that the output of treatment 1 is maximal, 9141.0kg/hm^2, increasing the production by 31.3%, Treatment 2 and treatment 3 increase the production by 30.9% and 29.1% respectively. The soil basis efficiency is 6964.5kg/hm^2. The 100kg paddies need pure nitrogen 1.75 kg, lower 0.04kg than 2006. Soil provides pure nitrogen amounts 123.9kg/hm^2, Urea utilization ratio is 32.3%. It is suggested that we should input pure nitrogen 104.0kg/hm^2 when the target , lower 10.7kg/hm^2 than 2006.
出处
《中国农村小康科技》
2008年第9期59-61,共3页
Chinese Countryside Well-off Technology
关键词
水稻
氮肥运筹
产量
施肥参数
paddy rice, nitrogen fertilizer, output, applying fertilizer parameter
