It is necessary for cotton management to start with an early word and early adjustment and early cultivating. During the seasoning, according to different cotton varieties, farming methods, soil fertility, consistent dispensing for cotyledonization, guaranteeing the quality of phytoplankton, cultivating to tailor, leaving no partitions, cotton to strengthen the integrated pest management, adhere to the seedling stage Based on the query, the maintenance zone around cotton fields should be strengthened to control the breeding and damage of pests and diseases, and the seedling management work should be implemented to lay the foundation for the early buds of cotton.
First, timely wind, rain, low temperature, prevent secondary salinization damage. For the post-emergence cotton fields, because of the young cotton seedlings, the ability to absorb nutrients is weak, the leaf area is small, and the organic nutrition for photosynthetic effect is not enough. Coupled with the adverse weather environment, the root growth is more difficult and the disease is aggravated. occur.
If the cotton seedlings meet with rain before unearthing, the seedlings will be affected by soil compaction. After the rain, we must pay close attention to the cultivator, and find that bad seeds and bad shoots need to be replanted in a timely manner. After the cotton seedlings are unearthed, they will be exposed to rain. After the rain, the cultivators shall disperse in time and break the knot. To improve ground temperature, reduce soil moisture, reduce salinization, prevent rotting, rotting, rot, and promote root development.
Therefore, cotton cultivating at the seedling stage and improving ground temperature are the necessary methods to deal with the disease at seedling stage. It is recommended that broad cotton farmers: timely cultivating after the emergence of cotton in order to maintain soil moisture, but also to remove weeds. Strict cultivator quality, reaching the effects of staggering warming, when cultivating, do not pull side membrane, no membrane, no damage to seedlings, no pressure seedlings.
Second, cotton seedling control. It is recommended that a wide range of farmers in the cotton seedlings can conduct chemical regulation 2-3 times depending on the growth of cotton seedlings and the sensitivity of the species to the dilutenomide. After the cotton is present and the cotyledon flattened to green, the first methamphetamine is done after the seedlings. Chemical control should be based on seedlings, light control, diligent control, and promotion of control combined to increase the number of times for the control of danji amines in Wangchang cotton. The timing and dosage of chemical control are generally based on the growing status of cotton seedlings. Sensitive mastery.
Third, to strengthen the monitoring of plant diseases and insect pests, and timely prevention and control of pests such as cotton seedlings, cotton blind locusts, etc., in order to achieve early detection and early prevention and control to ensure the steady growth of cotton. After the cotton seedlings reach the four true leaf stages, they will prevent and control the cotton thrips; before the four true leaves of the cotton, the cotton leafhoppers will be controlled on the weeds outside the field, and 4 to 6 leaf seasons will be gathered to prevent and control the cotton aphid. Nymphs are in the fields and they have developed group defense and system control.
Fourth, the establishment of a seedling gradually longer thinking, no leaf fertilizer and chaos hit hormones. Eradicate disorderly drip-fat hormones, do not blindly apply strategies, and do not disturb chaos, establish seedlings gradually and gradually, and gradually reduce the number of thinking, can not use counterproductive, chaos leaf fertilizer, chaos hormones, break the balance of cotton growth, the formation of rain Unbalanced growth makes it difficult to handle. Make cotton grow rather than prosperous and guard against prosperous growth.
As the saying goes, “dry long roots, long wet seedlings; long aerobic roots, long anaerobic seedlings; cold long roots, hot long seedlings; lean soil long roots, long loam seedlings; phosphorus promote long roots, nitrogen promote long seedlings.â€
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