论文部分内容阅读
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%。
In this paper, the control of full-layer fertilization as a control, with mechanical precision hole location of deep fertilization machines, to study the super hybrid early rice mechanical precision live hole and slow release fertilizer one-time positioning of deep technology support for super hybrid rice growth, yield and nitrogen fertilizer Impact of the use of effects. The results showed that the deep fertilization of slow release compound fertilizer in rice under the condition of precision hole direct seeding facilitated the steady supply of nutrients in late rice growth stage. The deep fertilization of slow release compound fertilizer was more efficient than conventional full layer fertilization (control) / hm2-924.75kg / hm2, an increase of 10.3% -16.5%, significantly increasing yield, nitrogen fertilizer agronomic efficiency increased by 4.2 ~ 7.9 kg / kg N, an increase of 29.0% ~ 51.2%; absolute nitrogen utilization increased by 17.3% 42.6%; nitrogen harvest index increased 9.0%.