Method for increasing south propagation staggered-season generation-adding propagation coefficient of Xinjiang sea island cotton

Abstract

The invention provides a method for increasing the propagation coefficient during south propagation staggered-season generation-adding planting of Xinjiang sea island cotton. The method comprises the steps of variety selection, region and field selection, preparation before field sowing, sowing time determination, water and fertilizer operation, irrigation and drainage operation, chemical regulation and control, chemical ripening acceleration and the like. Compared with a control group, the method has the advantages as follows: the sowing quantity is averagely reduced by 56.1%, the actual harvesting yield of seed cotton is averagely increased by 51.7 kg / mu, the yield of finished product seeds is averagely increased by 43.8 kg / mu, the propagation coefficient is averagely up to 475.7, which is 3.8 times of that of the control group, the healthy grains are averagely increased by 6.4%, the germination rate is averagely increased by 6.0%, and the result shows that the seed yield of the produced seeds is increased, the propagation coefficient is ensured to reach 430-520, meanwhile, the seed quality is relatively good, so that the problem of low propagation coefficient during south propagation staggered-season generation-adding planting of the Xinjiang sea island cotton can be effectively solved, and the requirements of breeders and production can be completely met.

Description

technical field [0001] The invention relates to a method for improving the multiplication coefficient of Xinjiang sea-island cotton in the south of the wrong season. Background technique [0002] As we all know, the continuous update of varieties’ agronomic traits and the timely and large-scale promotion of fine varieties are the key to the improvement of agricultural production technology, and fine varieties are closely related to efficient variety breeding measures. In reality, variety breeding is a difficult and long journey. Usually, successful breeding A variety requires the joint efforts of many people for many years; however, we still often see that even breeders who have been engaged in breeding work for many years fail to successfully breed a variety for many years. Because of this, it is necessary to speed up the process of breed selection. [0003] Through many years of human practice, especially the efforts of the past half a century, breeders have greatly promo...

AI Technical Summary

Problems solved by technology

[0007] Further analysis shows that compared with the typical sea-island cotton varieties grown in other cotton regions in the world, the Xinjiang sea-island cotton variety has the shortest growth period and has more obvious regional characteristics. In addition, Xinjiang sea-island cotton has special requirements for natural resources, resulting in Xinjiang is currently the only sea-island cotton production area in my country. Except for Xinjiang cotton experts, experts from other cotton regions at home and abroad have no successful examples of Xinjiang sea-island cotton planting in different seasons.

Images