Effects Of Different Density And Plant Type Cultivation On Yield And Fiber Quality Of Insect-resistant Cotton

This test for cotton regular training, severe premature aging and bad at the bottom of the bell, the problem of low efficiency of labor, on the basis of the cotton itself, regulation and compensation function in different plant type simplified cultivation technology research, the research and development the simplified technique, to simplify management and reduce labor costs, to reduce the rotten cotton bell, in order to improve the cotton yield and quality. This experimental study on cotton lu 28 different density of plant cultivation, and to explore the feasibility of different plant type cultivation technique suitable for density.The plant type change effect the growth process,growth process of cotton longer of Nipping Cotton, Removal Early Fruiting Branch than simplification pruning and careful pruning retaining leafy shoots; can effectively reduce the plant height of cotton plant processing; happy by reserving 2 vegetative branches, fruiting branches and fruiting node number increased, significantly higher than that of other plant processing.Effect of plant type variation on the pre summer peach Pruning the highest, lowest happy plant type difference reached significant level on the other and, not "three" effect of peach; Changes in the distribution of plant boll spatial effect is very big, the lower boll number, boll number within were happy plant type was significantly higher than that in other three treatments of upper boll number, boll number opposite peripheral, No effect on the distribution of cotton bolls in different space of boll, lint percentage, the middle peripheral heavy influence greatly, were happy to significantly lower than the other three treatment plant.Plant treatment has little influence on the five indexes of fiber, Happy cotton fiber plant type processing upper half mean length, uniformity index is high, good fracture than strong, micronaire value and elongation of simplified pruning, large small, But more pruning and removal of early fruiting branches treatment did not show significant difference, indicate that plant treatment on five indexes of cotton fiber has no adverse effect.From the output results can be seen, in a certain density range of cotton yield did not change much. But the cotton planting benefit between different density of different plant types of treatment vary widely, pruning method, removal of early fruiting branches way income is generally lower than the simplified pruning way, but to early fruiting branches of Cotton Boll Rot less processing, high grade, Happy plant processing mode in 30000 strains of /hm2-4.5 million line /hm2 density range, income declined, with 30000 strains /hm2 density in the highest earnings, 11248 yuan /hm2, 45000 strains of /hm2 density yields the lowest, 7959 yuan /hm2.Study different density of different plant type, and to explore the feasibility of the different plant cultivation techniques of appropriate density. Should be keeping 2 leaf branch under the density of 30000 plants/hm2 plant type treatment yields the highest, planting in the maximum benefit.