整枝方式对不同株型棉花品种产量及纤维品质的影响

采用两个株型存在明显差异的棉花品种鲁棉研37号和德棉16号,设置三种不同整枝方式(不整枝、简化整枝、精细整枝),研究了不同整枝方式对不同株型棉花品种产量及纤维品质的影响。结果表明:在种植密度为5.25万株/hm^2条件下,鲁棉研37号株高显著高于德棉16号,整枝方式对株高和果枝数影响不显著;鲁棉研37号简化整枝处理籽棉产量和皮棉产量均最高,且籽棉产量显著高于精细整枝处理,德棉16号在不整枝处理下籽棉产量和皮棉产量最高,与精细整枝处理无显著差异,但显著高于简化整枝处理;不同整枝方式对两个品种纤维上半部平均长度和整齐度指数存在一定影响,但纤维指标均能达标。由此可见,在该密度条件下,株型紧凑型品种鲁棉研37号更适合简化整枝处理,松散型品种德棉16号更适合不整枝处理。

Effects of Pruning on Yield and Fiber Quality of Different Cotton Varieties

The effects of different pruning methods no pruning,simplified pruning and fine pruning on the yield and fiber quality of two types of cotton(SCRC 37 and Demian 16) were studied.The results showed that the plant height of SCRC 37 was significantly higher than that of Demian 16,and the effect of pruning methods on plant height and number of fruit branches was not significant under the condition of planting density of 52,500 plants/hm^2;The yield of seed and lint of SCRC 37 was the highest,and the yield of seed cotton was significantly higher than that of fine pruning treatment.The yield of seed cotton and lint of Demian 16 was the highest under no pruning treatment,but it was significantly higher than that of simple pruning treatment;Different pruning methods have certain influence on the average length and evenness index of the upper half of the fiber of the two varieties,but the fiber index can reach the standard.It can be seen that SCRC 37 is more suitable to simplify pruning treatment and Demian 16 is more suitable for non-pruning treatment.