摘要
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591.9 kg.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。
The systematic study was employed to study the growth characteristics and the accumulation law of N,P,K nutrients.Three treatments were designed in cotton fields including low-yield,medium-yield,high-yield cottons.Results showed that the stem length of high-yield cotton had no such changes with medium-yield and low-yield cottons,but the stem increase of high-yield cotton stopped before medium and low yield cottons.The numbers of total bolls for medium and low yield cottons were much lower than the high-yiel...
出处
《棉花学报》
CSCD
北大核心
2009年第5期431-433,共3页
Cotton Science
基金
新疆生产建设兵团棉花大面积超高产综合配套技术示范项目(2006GG21)
关键词
杂交棉
南疆
生长性状
氮磷钾
模拟
hybrid cotton
South Xinjiang
growth traits
nutrient N
P
K
model
