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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 condition of frog rice ecological planting, the effects of the ratio of base-tillering fertilizer and ear-fertilizer on the main agronomic characters and yield of rice were studied. The results showed that when the total nitrogen application rate was 300 kg / hm ~ 2, increasing the ratio of basal tillering fertilizer to panicle fertilizer could promote the plant height, tillering and panicles per panicle. The total grain number, seed number and 1000-grain weight Had a negative effect; the ratio of tillering fertilizer to panicle fertilizer was 7: 3, the highest tillering rate of rice was 68.9%, the lowest was 6: 4, 63.4%. The highest yield was 11 464.1 kg / hm ~ 2 when the ratio of base fertilizer to panicle fertilizer was 7: 3, and reached the extremely significant level with other treatments. There was no significant difference among the other three treatments. According to the comprehensive test results, the suitable proportion of rice-based tillering fertilizer and panicle fertilizer nitrogen is 7: 3.