Key points of Cotton yield formation period Management
The light and heat conditions in the early part of this year are favorable for the growth of cotton, but the recent low temperature and light, overcast and rainy weather are extremely disadvantageous to the growth of cotton, and the shedding of buds and bolls increases obviously. At present, it is a critical period for the formation of cotton yield. in order to seize high cotton yield, the following management measures should be strengthened:
1. Supplementary application of top fertilizer and foliar spraying fertilizer for cotton fields with more bolls and premature senescence fields, urea 5-7.5 kg per 667 square meters, foliar spraying fertilizer can also be combined with insect control.
2. Rational pruning and chemical control due to the recent high number of Rain Water, which caused poor ventilation and light transmission in the cotton field, it is necessary to push plants and ridges. At the same time, 98% of thalidomide is used for every 667 square meters in Wangchang cotton fields, 98% 1-2 grams per 667 square meters in robust cotton fields, and 0.5-1.0 grams per 667 square meters in poor cotton fields, which is best carried out after fertilization and before irrigation.
Third, integrated pest control to strengthen the control of cotton bollworm, blind Toona sinensis, whitefly, etc., pyrethroids, organophosphorus and other pesticides can be used alternately, and pay attention to the protection of natural enemies, usually after 5 o'clock in the afternoon. For Fusarium wilt and Verticillium wilt, prevention should be given priority to. At the initial stage of the disease, 500 times 25% of the drug solution can be used to irrigate the roots, 50-100 ml per diseased plant, and the more severe fields can be reperfused at intervals of 5-7 days. at the same time, 0.2% potassium dihydrogen phosphate solution plus 1% urea solution was used for foliar spraying every 5-7 days for 2-3 times.
- Prev
Golden Nonghua Cotton Variety-- Yubaoza 4
Approval No.: Yu Shimian 2006011 characteristics: spring cotton hybrid varieties. (central Henan) the whole growth period is 131 days, with good growth in seedling stage and steady growth in later stage. The plant height is 104.9 cm, the plant is tower-shaped, the plant shape is loose, the leaves are medium size, the leaves are dark, the bolls are strong, the bolls are oval and medium on the large side. The average number of fruit branches per plant is 17.2, bolls per plant is 28, boll weight is 6.2g, lint percentage is 40.5%, seed index is 11.1g, pre-frost flower rate is more than 90%, floss is smooth, fiber is white, cashmere length is 2.
- Next
2019 New cotton varieties: high-yielding cotton seeds, a new high-yield insect-resistant cotton variety has been cultivated in Anhui.
The Cotton Research Institute of the Chinese Academy of Agricultural Sciences recently developed a new cotton variety (Zhongmiansuo 53) in Hefei that can increase production by 20%. It can produce more than 50 peaches per plant and yield 751 jin of seed cotton per mu, twice as much as ordinary cotton, and has stronger insect resistance. At present, China Cotton Institute 53 has been listed as a subsidized variety of cotton in Anhui Province in 2007. At the same time, Zhongmiansuo 53 is also a bivalent transgenic insect-resistant cotton.
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