水稻氮肥运筹方式试验研究

Study on Operational Fertilization of Nitrogen in Rice

根据水稻的生长发育特点和需肥规律,在施好蘖肥的基础上,巧施穗粒肥,既可以控制抽穗前水稻徒长,不过早封垄,防止贪青,又能保证后期营养供给,促进早熟粒饱,既改善了稻米品质,又提高了稻谷产量。试验证明,在建三江创业农场地区的气候条件下,试验各个处理中,基∶蘖∶穗=5∶3∶2的施肥比例最佳,产量达657.8 kg/667 m2,增产15.41%,增加效益145.7元/667 m2。

According to rice growth and development characteristics and fertilizer requiring law, ingenious application of panicle and grain fertilizer not only controls spindling before heading and prevents unfavorable-delayed senescence, but also guarantees nutrition supply for late growth to accelerate early maturity and full filling, improves grain quality and increases grain yield. The experiment proved that under the basal fertilizer：, tillering fertilizer： panicle fertilizer was 5：3：2, The benefit was increased by 145.7 Yuan/66.7 m^2. climate at Jiansanjiang Chuanye Farm, the optimal ratio of and the yield was 657.8 kg/667 m^2, increased by 15.41%.