施氮量对不同水稻品种氮肥利用率和农艺性状的影响

被引:22
作者
孙志广
王宝祥
杨波
徐波
邢运高
刘艳
Bello Babatunde Kazeem
徐大勇
机构
[1] 江苏徐淮地区连云港农业科学研究所/江苏省现代作物生产协同创新中心水稻研究室
关键词
粳稻; 施氮量; 农艺性状; 氮肥利用率;
D O I
10.19386/j.cnki.jxnyxb.2019.12.05
中图分类号
S511.22 [];
学科分类号
摘要
以适于黄淮稻区的18个粳稻品种为材料,设置4个氮肥水平(0、225、300和375 kg/hm2),研究了施氮量对不同水稻品种氮肥利用率和农艺性状的影响。结果表明:在不同的施氮水平下,各品种的氮肥农学利用率及农艺性状变异显著;株高、有效穗数、全生育期以及单株谷重随着氮肥施用量的增加而显著提高;氮肥偏生产力及结实率随着氮肥施用量的增加而降低;千粒重、每穗粒数、氮肥农学利用率和穗长等性状随氮肥施用量的增加而呈现先增加后降低的趋势。利用隶属度函数和K-均值聚类分析方法,综合评价出氮肥利用率最好的3个品种为盐稻15198、连粳7号和津粳优2186。
引用
收藏
页码:23 / 28
页数:6
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