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1984—1985年以盆栽的形式研究了氮肥对水稻早熟品种各级分蘖的产量构成因素的影响。试验结果表明,高温年补肥用量10%和25%的处理可以使第一、二、三次分蘖的穗数增加1.0%、4.8%;13.8%、29.2%;47.1%、182.4%。穗肥用量17%和25%的处理能使第一、二、三次分蘖穗的穗粒数增加2.8%、4.6%;5.2%、7.9%;16.9%、22.6%。粒肥用量16%和25%可使第一、二、三次分蘖的饱满粒率增加4.2%、6.3%;8.0%、10.4%;11.1%23.9%。分蘖肥对各级分蘖的穗数没有促进作用。低温年蘖肥用量16%和25%的处理可以使穴平均穗数增加20.9%、9.6%,补肥10%和25%的处理可使第一、二、三次分蘖的穗数增加14.1%、12.4%;47.1%、74.4%;25.0%、-6.2%。补肥17%和25%的施肥处理能使第一、二、三次分蘖的一穗粒数增加23.8%、13.8%;8.5%、9.7%;3.0%、17.0%。穗肥对一穗粒数,粒肥对千粒重、饱满粒率影响不大。
From 1984 to 1985, the effects of nitrogen fertilizer on the yield components of tillers at different levels of rice precocious varieties were studied in potted form. The results showed that the treatments of 10% and 25% fertilizer supplementation increased the number of spike of first, second and third tillers by 1.0%, 4.8%, 13.8%, 29.2%, 47.1% and 182.4% respectively. The treatment of 17% and 25% treatments of panicle fertilizer increased the number of spikelets per panicle in the first, second and third tillers by 2.8%, 4.6%, 5.2%, 7.9%, 16.9% and 22.6% respectively. 16% and 25% of granular fertilizer could increase the full grain rate of first, second and third tiller by 4.2%, 6.3%, 8.0%, 10.4% and 11.1% 23.9% respectively. Tillering fertilizer had no effect on the number of tillers at all levels. The treatment of 16% and 25% tillering fertilizer at low temperature could increase the average number of spikes by 20.9%, 9.6%, 10% and 25% fertilizer supplementation, respectively. The number of tillers of first, second and third tillers increased by 14.1% 12.4%; 47.1%, 74.4%; 25.0%, -6.2%. Fertilization with 17% and 25% fertilizer could increase the number of grains per spike of first, second and third tillers by 23.8%, 13.8%, 8.5%, 9.7%, 3.0% and 17.0% respectively. Spike fertilizer on a grain number, grain fertilizer on the 1000-grain weight, full grain rate has little effect.