杂交稻准两优527以肥控蘖超高产栽培试验

The Technique of Controlling Ineffective Tillering by Adjusting Application Method of Nitrogen Fertilizer for Super-high Yield of Zhunliangyou 527(Hybrid Rice Variety)

针对水稻超高产如何有效控制无效分蘖的难题,采取以肥(氮肥)控蘖代替排水晒田控蘖的措施,对杂交稻准两优527进行了试验。结果表明:在中上等肥力田重施底肥的基础上,12个处理中,处理5(667m2栽1.33万穴,穴栽2株带2蘖壮秧,施肥水平为:氮肥底肥占55%、分蘖肥占10%、穗肥占35%;钾肥底肥占40%、穗肥占60%)产量最高为823.3 kg/667m2。其次是处理3(穴栽3株带2蘖壮秧,施肥水平为:氮肥底肥占65%、穗肥占35%;钾肥底肥占40%、穗肥占60%),产量为805.7 kg/667m2。两者均可实现有效控蘖,产量达800 kg/667m2以上的超高产栽培水平。

The experiment was conducted to investigate effects of different nitrogen application method and transplant density on super-high yield of Zhunliangyou 527 （hybrid rice variety）. The results show that the yields of 823.3 kg/667m^2 and 805.7 kg/667m^2 can be gained under the urea application amount with 15.68 kg/667m^2 of basic fertilizer, 2.85 kg/667m^2 of tiller fertilizer and 9.98 kg/667m^2of spike fertilizer and 13.3 thousand hole/667m^2 of density （ 2 plants with 2 strong tillers/ hole） and the urea application amount with 18. 5 kg/667m^2 of basic fertilizer and 9.98 kg/667m^2 of spike fertilizer and 13.3 thousand hole/667m^2 of density （ 3 plants with 2 strong tillers/hole） respectively, Over 800 kg/667m^2 of rice yield can be gained by the both application methods of nitrogen fertilizer and transnlant densities by controlling the ineffective tillering.