南疆移栽棉密度的影响效应

Effects of Density on Cotton Seedling Transplanting in Southern Xinjiang

[目的]研究不同密度条件下,穴盘苗与裸根苗移栽杂交棉生长发育特性及产量特征。[方法]在大田栽培条件下对穴盘苗与裸根苗移栽杂交棉设置5个密度处理,结合其产量特征进行模型拟合和图表分析。[结果]密度对2种方式的移栽棉个体产量性状均可以很好地用函数模型表示;裸根苗移栽棉叶枝产量较穴盘移栽苗高,2年结果均表现出随密度增加裸根苗产量高于穴盘苗。[结论]穴盘移栽苗的生长竞争效应大于裸根苗移栽棉。从节本增效角度出发,裸根苗移栽更具有推广价值。

[Objective] The growth characteristics and yield characteristics of plug and bare root seedlings transplanting hybrid cotton were studied.[Method]Cultivation in field conditions,plant plug and bare root seedlings transplanting hybrid cotton in 5 different densities,its yield structure with model fitting and charting was studied.[Result]The yield of individual cotton transplanting in two ways could be expressed by good function model with density.The yield of leafy seed cotton about bare root seedlings transplanting cotton was higher than that of plug seeding cotton,and two years yield of seed cotton all showed that with density increasing bare root seedlings transplanting cotton was higher than that of plug seeding cotton.[Conclusion]Plug seeding cotton had higher competitive effect than bare root seedlings transplanting cotton,but bare root seedlings transplanting had more significance in the perspective of cost efficiency.