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棉花学报  2009 

南疆高产杂交棉生长性状及氮磷钾吸收模拟

DOI: 1002-7807(2009)05-0431-03

Keywords: 杂交棉,南疆,生长性状,氮磷钾,模拟

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Abstract:

依系统研究法研究高中低三种产量水平杂交棉生长和氮磷钾吸收。结果表明,高产棉的株高与中低产棉差别不大,但主茎增长比中低产棉提前结束,高产棉总铃数明显高于中低产棉,特别在铃位空间分布上更合理;高产棉花的氮磷钾吸收可用Logistic曲线方程表达,拟合良好,快增期、持续时间与中低产棉相比有明显差异,高产棉吸收的N、P2O5、K2O总量为515.3、126.4和591.9kg·hm-2,大于中低产棉吸收总量;高产棉较中低产棉生长协调性更好,吸收养分总量多。说明南疆棉区在目前生产条件下,应用合理的管理技术措施,能够更有效协调棉花生长和养分分配,实现棉花大面积高产。

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