肥料运筹比例对不同类型水稻群体质量的影响

摘要

The effects of different ratios of base-tiller fertilizer to panicle -grain fertilizer application on the population quality of different types of rice varieties were studied.The results indicated that the hybrid japonica rice varieties had the highest yield under the condition of base-tiller fertilizer ∶panicle-grain fertilizer=6∶4, and the conventional japonica rice varieties had the highest yield under the condition of base-tiller fertilizer ∶panicle-grain fertilizer=5∶5.When the proportion of base-tiller fertilizer application increased , the number of effective panicles, number of filled grains per panicle, seed-setting rate, 1000-grain weight, leaf area index, and dry matter weight of different types of rice varieties were increased firstly and then decreased , which was consistent with the change trend of yield.Under the same fertilization condition, the hybrid japonica rice varieties had obvious advantages in dry matter weight, spike rate, filled grain number per panicle and yield as compared with the conventional japonica rice varieties, suggesting that hybrid japonica rice could more effectively use the nutrients and possessed higher yield-in-creasing potential under the conditions of large sink and full source .%研究了基蘖肥和穗粒肥不同比例对不同类型水稻群体质量的影响。结果表明：杂交粳稻品种在基蘖肥∶穗粒肥＝6∶4条件下产量最高，常规粳稻品种在基蘖肥∶穗粒肥＝5∶5条件下产量最高。不同类型品种的有效穗数、每穗实粒数、结实率、千粒重、叶面积指数、干物质重量等随基蘖肥比例的增加均呈先增后降的趋势，与产量的变化一致。在同一处理条件下杂交粳稻较常规粳稻品种在干物质重量、成穗率、每穗实粒数以及最终产量上有明显优势，说明杂交粳稻能更有效利用养分，在库大源足的条件下具备更高的产量潜力。