Sowing techniques of Cotton at the beginning of Spring
According to the variety, soil fertility and planting mode to determine the density, reasonable close planting, to achieve one sowing the whole seedling. Generally single planting spring cotton varieties, the density per mu is about 3500 plants, row spacing is 1 meter, plant spacing is 19 cm; semi-spring varieties are generally controlled at about 4500 plants per mu, row spacing, plant spacing is 15 cm; summer cotton varieties, in the plots with good fertilizer and water conditions, the density per mu is about 6500 plants; the plot of general soil fertility is about 7500 plants; and the dry and barren low-yield land is about 8000000 trees.
The first sowing whole seedling is the basis of increasing production and bumper harvest. In order to achieve the first sowing whole seedling, we must first select the seeds of higher quality. Secondly, necessary seed treatments must be carried out before sowing, such as seed selection and drying, in order to improve the germination rate and necessary germination potential. In order to prevent cotton seedling disease, seed dressing should be carried out. Third, we should pay attention to the quality of sowing and sow enough moisture. Generally, the sowing depth is about 4 cm. In addition, spring cotton should pay attention to the application of sufficient base fertilizer, generally more than 5 square organic fertilizer per mu and about 20 kilograms of ammonium dihydrogen phosphate.
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Saline-alkali resistant cotton f502-2
First, the characteristic plant tower type, Ⅱ type fruit branch, the plant type is loose, the leaf color is dark green, the common leaf shape, the medium size, the leaf surface is smooth, the leaf is thin and hard, the fruit branch is slightly upward. The seedling emerges quickly, neatly, the growth is robust, the seedling growth potential is medium and stable, the plant grows rapidly before and after the bud stage, the first fruit branch node is 6-7 nodes, the plant height is about 70 cm. The boll setting ability is strong, there are 10 bolls per plant, the boll shape is oval, large, the single boll weighs 6.6 grams, the bell shell is thin, the boll opening is concentrated and smooth, and the boll strength is good.
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Jiumian No.2 (Cotton)
Jiumian No. 2 is a new cotton variety selected from the cotton experimental station of Jiuquan Agricultural Research Institute in Gansu Province, which is a strain 77-118 with early maturity, high yield and high lint percentage, crossed with disease-resistant and late-maturing variety Zhongmiansuo 16, and bred directionally through pedigree selection. It was approved and named by Gansu Provincial crop Variety approval Committee in 2001. This variety is suitable for planting in the cotton area of Hexi Corridor in Gansu Province, Ejina Banner in Inner Mongolia and Ningxia. 1 main characteristics this variety belongs to extra precocious upland cotton, with a whole growth period of 138 days.
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