Effects of Increasing Nitrogen and Potassium Fertilizer on Yields of Yongyou 9 in Long Age Rice Seedling

doi:10.3969/j.issn.1006-8082.2013.06.019

Abstract

摘要： 以籼粳杂交晚稻甬优9号为对象，从生育期、群体茎蘖动态、产量及其构成因素等方面，比较研究了超秧龄移栽条件下，增施氮、钾肥对连作晚稻甬优9号产量及产量构成的影响。结果表明，甬优9号作连作晚稻栽培，适宜移栽秧龄为35 d左右，最长不宜超过40 d；在35 d秧龄移栽时产量最高，可达8 910 kg/hm2，且每穗实粒数对产量的贡献最大；35 d秧龄时在基施和第1次追施尿素合纯氮（N）210.0 kg/hm2、磷肥（P2O5）82.5 kg/hm2、钾肥（K2O） 112.5 kg/hm2时，已能满足其生长需求；超秧龄条件下增施氮、钾肥有利于增加有效穗数，但每穗实粒数下降，产量降低。

关键词: 水稻, 秧龄, 氮肥, 钾肥, 产量

CLC Number:

S511.062

傅丽青1,丁祥海2,薛占奎2,房玉伟2. 超秧龄条件下增施氮、钾肥对甬优9号产量的影响[J]. 中国稻米, 2013, 19(6): 62-64.

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Effects of Increasing Nitrogen and Potassium Fertilizer on Yields of Yongyou 9 in Long Age Rice Seedling

超秧龄条件下增施氮、钾肥对甬优9号产量的影响

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