High-quality cultivation method for thin planting and early maturity of cotton

Abstract

The invention belongs to the field of crop cultivation, and particularly provides a high-quality cultivation method for thin planting and early maturity of cotton. The high-quality cultivation methodfor thin planting and early maturity of cotton comprises the steps of selecting cotton varieties suitable for local weather conditions; carrying out rational thin planting under the conditions that the sowing density of conventional cotton varieties is 9500-12500 plants / mu, and the sowing density of hybrid cotton varieties is 7000-10000 plants / mu; carrying out premature management, chemical regulation and control, fertilizer application and irrigation and carrying out chemical ripening and defoliation; and then harvesting. Compared with an existing Sinkiang close planting culture method, the cultivation method for the cotton has the advantages that the yield of the cotton is the same or is increased higher, but the quality of cotton fibers can be improved obviously, the impurity content ofthe fibers is reduced, and the content of foreign fibers such as a mulching film is reduced.

Description

technical field [0001] The invention belongs to the field of crop cultivation, and in particular relates to a method for cultivating cotton with sparse planting, early maturity and high quality. Background technique [0002] According to the climate characteristics of Xinjiang cotton region, the "dense, short, early, film" cotton cultivation technology was gradually formed in the 1980s and 1990s, and the application of this technology has made great contributions to the cotton production in Xinjiang. However, with the large-scale implementation of mechanical harvesting of cotton in the Xinjiang cotton region, a series of problems have emerged in the current cotton planting mode and cultivation methods. One is that the cotton planting density is too high (15,000-18,000 plants / mu), and the row spacing is unreasonable (66cm+10cm wide and narrow rows), resulting in shading in the field, insufficient light in the lower leaves, resulting in premature senescence, poor development o...

AI Technical Summary

Problems solved by technology

One is that the cotton planting density is too high (15,000-18,000 plants / mu), and the row spacing is unreasonable (66cm+10cm wide and narrow rows), resulting in shading in the field, insufficient light in the lower leaves, resulting in premature senescence, poor development of lower cotton bolls, and poor fiber length. , strength and maturity are affected; although cotton leaves can be taken off after spraying defoliant before harvesting, most of them hang on the fruit branches and less fall on the ground, resulting in high impurity content of seed cotton during mechanical harvesting. During processing, it is necessary to increase the number of times of cleaning to damage the length of cotton fibers

Second, due to the rapid cooling in the late stage of Xinjiang, the cotton fields in the northern and southern Xinjiang were sprayed with defoliants and ripening agents in mid-September and early September, respectively. The upper cotton bolls were not mature normally, and their length, strength and maturity decreased.

The third is that due to the use of plastic film covering, most cotton fields do not clean the plastic film before harvesting, and the plastic film will inevitably be brought into the seed cotton when harvested by the machine

Fourth, chemical regulation and water and fertilizer management are unreasonable, causing premature aging or late maturity of cotton fields, and also affecting the fiber quality of cotton

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