In the cultivating loose soil, disease prevention and pest control cotton seedlings often have a variety of diseases, such as standing, anthrax, trips, etc., light late, severe death. From the emergence to the end of May in case of rainy weather, it will aggravate the condition. The occurrence of disease at the seedling stage is caused by a variety of adverse environmental conditions. The resistance of the seed itself, low temperature, high humidity and so on are the main factors for the occurrence of seedling disease. Therefore, it is said that the cultivator is close to the root of the cotton seedlings and the cultivator is shallow to deep and is effective. Agricultural disease prevention and treatment measures. Deep cultivating in cotton fields not only has special effects on disease prevention and control, but also has special effects on promoting the root rooting and preventing premature aging. Chemical control, sprayed once every 7-10 days after the cotton seedlings are sprayed, good foliar fertilizer and bactericidal pesticides are sprayed, and even after spraying twice, they can receive very good results. The seriousness of the cotton field liquid concentration can be increased. Big. Comparison of the occurrence of cotton seedling diseases under different conditions: The heavy cotton field is heavier than the oyster cotton field. The cotton field with low organic matter content is heavier than the cotton field with high organic matter content. The deeper sowing of the cotton field is more important than the sowing of the lighter cotton field. The mulching of the mulch cotton was heavier than that of the cotton field where the soil was closed late. The rainy weather was heavier than the fine weather. The cotton field that was sown early was more important than the cotton field that was sown late.
Seedlings and seedlings, close planting When the true leaves of cotton seedlings grow, they must do a good job of cotton field seedling seedlings in a timely manner, related to the Miao Qi Miao Zhuang to alleviate the major problems of seedling disease, related to the final decision of the density of field seedlings, high yield cotton fields Ding must be strictly controlled. Calculate the distance between the seedlings by averaging the row spacing. More loose cotton seeds, the density of seedlings must not be too large, with 2500-3000 strains per mu. It is appropriate for many cotton farmers to stay late, and five or six leaves have not yet been established. Violation, can not achieve cotton Bud plant period dark leaves, buds and buds, the best period of time between the seedlings of cotton seedlings, in a true leaf exposed vegetable seedlings, two true leaves grow for thinning, three true leaves grow To set the seedlings. For the heavier seedlings, the time for setting seedlings can be postponed to four-leaf seedlings. Do not postpone the time for seedlings to five leaves and six leaves.
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