摘要
以D优527为材料,研究了不同种植方式下不同施钾量对水稻钾素吸收利用和产量的影响。结果表明,常规翻耕插秧利用穗粒数的优势实现最高产量10.71 t/hm2,比常规翻耕抛秧、免耕抛秧和免耕高桩抛秧分别高3.62%,1.58%和1.88%,其中常规翻耕插秧与常规翻耕抛秧的差异达极显著水平;随着施钾量的增加,稻谷产量和钾素积累总量增加,钾素干物质生产效率、钾素稻谷生产效率和钾素收获指数下降,农学钾素利用效率无明显变化。
The effects of applying amounts of potassium fertilizer on K-use efficiency and grain yield of rice were studied with the hybrid rice combination D You 527 as the material. The grain yield of the conventional tillage ＆ transplanting mode was 10.71 t/hm^2, 3.62%, 1.58% and 1.88% higher than those of the conventional tillage ＆ broadcasting mode, the no-tillage ＆ broadcasting mode and the no-tillage with high standing stubbles ＆ broadcasting mode, respectively ; and the difference of grain yield between the conventional tillage ＆ transplanting mode and conventional tillage ＆ broadcasting mode was significant at 0. O1 level. Higher dosages of potassium fertilizer increased grain yield and total K accumulation （TKA）, but reduced K dry matter production efficiency （KDMPE） , K grain production efficiceney （KGPE） and K harvest index （KHI）. However, K agronomy efficiency （KAE） wasn＇t much influenced by the amounts of potassium fertilizer.
出处
《杂交水稻》
CSCD
北大核心
2008年第5期60-64,91,共6页
Hybrid Rice
基金
国家粮食丰产科技工程(2004BA520A05)
四川省攻关项目-水稻连免高桩抛秧技术研究与应用(04NG020-013)
关键词
水稻
种植方式
钾肥用量
钾素利用效率
产量
rice
planting modes
K-fertilizer application
K-use efficiency
grain yield
