What is the time and method of cotton transplanting? What are the management measures after cotton waterlogging?

Due to the different weather and climate, the planting time of cotton is also different. Generally speaking, cotton planting time is around April every year. China cotton is divided into three major cotton-producing areas: Yellow River Basin, Yangtze River Basin and Xinjiang. The sowing time in the Yellow River and Yangtze River basins is March and April every year (the specific time is related to varieties, latitudes and other factors), the sowing time in Xinjiang is April-May, and the picking time of mature cotton is September and 10. In fact, farmers have been buying cottonseed to grow cotton since spring and March.

The best time to sow cotton is to strive for early seedlings on the premise of keeping the seedlings intact, tidy and strong. Insect-resistant cotton varieties have low seed fat content, unbalanced ratio of protein to fat, low total nutrient content, less nutrients and energy needed for cotton seed germination and emergence, poor low temperature tolerance, slow emergence and weak seedling vitality. Therefore, cotton planting time should not be too early. We must master the principle of "timely" sowing. Cotton is a thermophilic crop, so it needs higher temperature when it germinates. Early sowing, low temperature, long emergence time, high nutrient consumption, weak vitality of cotton seedlings and serious disease seedlings often lead to "premature incomplete" or "premature aging" growth; ? "Qi", but can not make full use of the effective growth period, often resulting in late maturity and poor quality of cotton.

Generally, in cotton fields with good soil strength, when the ground temperature of 5 cm is stable at 14℃ ~ 15℃ for five consecutive days, the soil moisture is good, the humidity is suitable, and the weather is not strong in the near future. You can choose to sow suddenly in sunny days. In the suitable sowing range, the sowing date should be shortened as much as possible, and cotton should be sown at the most suitable time in order to realize the integrity of one seedling. In normal years, northern Xinjiang (April 10-20) is the suitable planting area for plastic film cotton; In the cotton field in saline-alkali land, the ground temperature is stable at 5 cm, and it is suitable to sow when it exceeds 16℃. In the suitable sowing range, the sowing date should be shortened as much as possible, and cotton should be sown at the most suitable time in order to realize the integrity of one seedling.

Around the end of August, cotton fruit began to go on the market. At this time, the farmers have already started harvesting. At first, they put the "cotton peaches" in their pockets and took them home, and dried them evenly in the sun in the fields. This is because if you take it back to dry, cotton will bloom faster, and if the rows in the field are not concentrated, it will be difficult to pick cotton. When the cotton garden is officially opened, you don't have to pick peaches, just pick cotton in the cotton field. ? Snow-covered, from mid-September to 1 1 month is the harvest season, and farmers can never rest. But looking at the snow-white cotton, everyone smiled, smiling snow-white cotton!