摘要
为了给超级稻合理施用氮磷钾肥提供科学依据,以超级稻组合‘两优293’为材料,研究了氮、磷、钾不同施肥水平对超级稻产量和肥料利用率的影响。结果表明,不同施氮水平对超级稻产量和肥料利用率影响最大,其次是施钾水平,最后是施磷水平;氮、磷、钾肥合理配施能最大的提高超级稻的产量,在每公顷施N、P2O5、K2O为270、150、270kg时,可得到最高产量,此时肥料的回收利用率、农学利用率最大;氮磷钾肥配合施用对超级稻产量的贡献是有效提高了肥料利用率、有效穗数、每穗总粒数和结实率。
Provide a scientific basis to the super rice and reasonable application of N, P, K fertilizer, ＇Liangyou 293＇ was used as material to study the effects of different fertilization levels of nitrogen, phosphorus, potassium on super rice yield and fertilizer utilization. The results showed that： the effect of super rice yield and fertilizer utilization was the best under different nitrogen levels, and this effect was followed by the potassium level, and finally the level of phosphorus. Combination of reasonable fertilizer N, P, K were maximum to increase super rice yield which was the highest yield and the maximum of fertilizer recovery efficiency and agronomic efficiency under N 270 kg/hm2, P205 150 kg/hm2, K20 270 kg/hm2. Combination of reasonable fertilizer N, P, K on super rice yield contribution increased the fertilizer use efficiency, effective panicles, grain number per panicle, ripening rate.
出处
《中国农学通报》
CSCD
2012年第24期106-110,共5页
Chinese Agricultural Science Bulletin
基金
海南省科学事业费项目"超级杂交水稻养分管理与示范"(琼财预[2006]105号)
关键词
超级稻
施肥
氮磷钾
肥料利用率
产量
super rice
fertilization
N, P, K
fertilizer utilization
yield
