赣北棉区棉花种植方式与密度组合比较试验

The Comparison Test of Different Cotton Planting Patterns and Densities in the Cotton Region of North Jiangxi

试验采用以种植方式、种植密度及移栽(或播种)时间为因素的组合随机区组设计,共18个处理,探讨赣北棉区棉花最佳种植方式及密度。结果表明:营养钵育苗移栽的产量、收益及纯收益均显著高于基质育苗移栽与精准直播,后两者的产量、收益相当;营养钵育苗移栽的总投入成本比基质育苗移栽及精准直播的都高,尤其人工成本费用更高;基质育苗移栽和精准直播的生产总投入成本相差不大;赣北棉区适当提前育苗移栽时间和增加田间种植密度,有利于棉花早发丰产。

In order to evaluate the optimal cotton planting pattern and density , three factors combination randomized trials, adopting three growing seedling methods, and three planting densities, and two batches transplanting time, total 18 testing treatments, were designed in this test. The results indicated that nutritional soil seedling transplanting has obtained higher yield, benefit and net income significantly than soilless seedling transplanting and accurate direct seeding, and the be- hind two had almost consistent yield and income. The soilless seedling transplanting and accurate direct seeding were beth low- er investment than the nutritional soil seedling transplanting owning to higher cost of labor; the difference of production cost between soilless seedling transplanting and accurate direct seeding was not significant. In addition, in order to promote cotton to grow up early and obtain higher yield, growers should appropriately grow seedling and transplant ahead of time and increase the field planting density in the cotton region of north Jiangxi.