摘要
在蛙稻生态种养条件下,研究了基蘖肥与穗肥氮比例对水稻主要农艺性状及产量的影响。结果表明,当总施氮量为300 kg/hm^2时,提高基蘖肥与穗肥氮比例对水稻株高、分蘖、有效穗数有促进作用,对总粒数、实粒数及千粒重有负向作用;基蘖肥与穗肥氮比例7:3时,水稻分蘖成穗率最高,达68.9%,6:4时最低,为63.4%。基蘖肥与穗肥氮比例7:3时,产量最高,为11 464.1 kg/hm^2,与其他处理差异达到极显著水平,其他3个处理间的产量无显著差异。综合试验结果,水稻基蘖肥与穗肥氮适宜比例为7:3。
Under the conditions of eco-planting and breeding of rice and frog, the effects of different nitrogen ratios of basic tillering fertilizer and panicle fertilizer on the major agronomic traits and yield of rice were studied. The results show that when the total amount of nitrogen was 300 kg/hm^2 ,improving the nitrogen ratio of basic tillering fertilizer and panicle fertilizer could promote the plant height, tiller and effective panicle number of rice, but had negative effects on total grain number, grain number and 1 000-grain weight. When the nitrogen ratio of basic tillering fertilizer and panicle fertilizer was 7：3, the spike rate of was the highest, reaching 68.9%, and that of the treatment 6：4 was the lowest （63.4%）. The rice yield of treatment 7：3 was the highest, reaching 11 464.1 kg/hm^2 , and the yield was extremely significantly higher than other treatments, there was no significant difference in yield between the other 3 treatments. Comprehensive considering the test results, the appropriate nitrogen ratio of basic tillering fertilizer and panicle fertilizer was 7： 3.
出处
《上海农业学报》
CSCD
2016年第6期82-86,共5页
Acta Agriculturae Shanghai
基金
上海市科委重点科技攻关项目(12391900200)
关键词
氮肥运筹
农艺性状
产量
蛙稻生态种养
Nitrogen application
Agronomic traits
Yield
Eco-planting and breeding of rice and frog
