知识与财富的链接
本文以习惯全层施肥为对照,借助机械精量穴直播定位深施肥机具,研究了超级杂交早稻机械精量穴直播与缓释肥一次性定位深施技术配套对超级杂交早稻生长、产量和氮肥利用效果的影响。结果表明:水稻在精量穴直播条件下,缓释复合肥机械定位深施肥有利于保持水稻生长后期的养分稳定供应,缓释复合肥机械定位深施肥比习惯全层施肥(对照)处理增产630kg/hm2-924.75kg/hm2,增幅10.3%-16.5%,增产效果明显,氮肥农学利用率提高4.2￣7.9 kg/kg N,增幅29.0%￣51.2%;氮素利用率绝对值提高17.3%,增幅42.6%;氮收获指数增加9.0%。
The effects of combining mechanical precise hill-drop drilling with controlled release fertilizers located depth-locating fertilization on growth and development,grain yield of rice and nitrogen utilization efficiency were studied in the paper.The results showed that one-off fertilizing the controlled release fertilizers by special machine can ensure nutrient stable supply to rice growth at late growth stage.Compared with the conventional fertilization all layer,the grain yield of super early rice were incr...
