摘要
应用15N示踪技术研究了不同氮肥施用技术对直播水稻氮素吸收及其产量形成的影响。结果表明 ,在氮肥用量相同的情况下 ,采用“一基三追” ,即在施基肥的基础上 ,追施苗肥、蘖肥和穗肥的施用技术能促进直播稻均衡生长 ,增加穗数 ,粒数和粒重 ,是一种适合直播水稻高产栽培的施肥技术。
Effects of different modes of fertilizer N application on nitrogen absorption and yield of direct seeding rice with 15 N tracing technique were studied. The results indicate that the fertilizer mode of “one basal fertilizer and three top dress” (fertilizer N applying on seeding stage, tillering stage and spikelet developing stage after applying basal fertilizer) can promote balance growth of direct seeding rice and improve the ear number, total grains and grain weight. This fertilizer mode is suitable for high yield culture of direct seeding rice.
出处
《核农学报》
CAS
CSCD
北大核心
2003年第2期123-126,共4页
Journal of Nuclear Agricultural Sciences
基金
浙江省科技厅"九五"重点项目 (96 110 2 2 0 8)资助
