机采种植模式对不同株型棉花生长及产量的影响

The Effect of Machine Harvesting Planting Patterns on the Growth and Yield of Cotton with Different Plant Patterns

田间研究1膜6行、1膜4行、1膜3行3种机采种植模式对新陆中54号和新陆中75号棉花生育进程、前期生长速率、棉铃时空分布、产量及其构成因素的影响。结果表明,密度不变条件下,随着行距的增加,苗期、蕾期生长速率加快,生育进程提前1~5d;新陆中54号1膜4行、1膜3行较1膜6行机采种植模式产量增加7.2%~10.0%;新陆中75号1膜4行、1膜3行较1膜6行机采种植模式产量下降5.6%~8.2%。1膜3行机采种植模式适合应用于株型松散型品种新陆中54号,但不适合于株型紧凑型品种新陆中75号。不同株型品种的最佳机采种植模式不一致。

Machine harvesting planting pattern including a six-line film,a four-line film and a three-line film,and varieties including loose type Xinluzao54 and compact plant Xinluzao75,were applied to study their effects on the cotton growing process,the early growth rate,time and space distribution of cotton boll and yield.The research results showed that,under density invariant condition,the growth rate of the seedling stage and the bud stage was quicker with the increase of the row spacing,and the growth process was1-5 dahead of time.The yield of Xinluzao54＇s four-line film pattern and three-line film pattern was increased by 7.2%-10.0%than that of the six-line film pattern and the yield of Xinluzao75＇s four-line film pattern and three-line film pattern was decreased by 5.6%-8.2%than that of the six-line film pattern.For loose plant type Xinluzao54,three-line film machine harvesting planting pattern was more suitable.But for compact plant type,three-line film pattern was not suitable.Therefore,different varieties had different machine harvesting cotton planting patterns and more attention should be paid on matching varieties with good patterns to achieve higher yield.