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为进一步提高机插杂交水稻产量和经济效益,笔者探讨了不同氮磷钾施用量对机插杂交稻的影响,结果表明:适当施用磷、钾肥,能提高水稻分蘖能力,促进水稻长势,但用量过多也会造成分蘖过多,引起水稻群体偏大,导致成穗率偏低。从最终产量和经济效益看,在与四团镇类似的田块上,推荐氮、磷、钾施用量分别为15、4.5、4.5kg/667m2,且整地前每667m2施用碳铵20kg。
In order to further enhance the yield and economic benefits of hybrid rice intercropping with rice, the author discussed the effects of different N, P, K application rates on hybrid rice with inserted rice. The results showed that appropriate application of P and K fertilizers could improve the tillering ability of rice and promote the growth of rice, Too much can also cause excessive tillering, causing the rice population to be too large, resulting in a low earning rate. From the perspective of final yield and economic efficiency, it is recommended that the application rates of N, P and K be 15, 4.5 and 4.5kg / 667m2, respectively, and that of ammonium bicarbonate should be 20kg per 667m2 before land preparation on the plots similar to that of Qituan Town.