Cotton is a thermophilic crop, requiring higher temperatures when germinating and emerging. Seeding is too early, the temperature is low, seedlings take a long time, nutrients are consumed, cotton seedlings are weak, and the seedlings are very sick, often causing “early but not full†or “early not to sendâ€; if sowing is too late, although the emergence is “fast†"Qi", but can not make full use of the effective growing season, often resulting in late-maturing cotton, low quality and poor quality.
The appropriate time for planting cotton is to ensure early seedlings on the premise of keeping Miaoquan, Miaoqi and Miaozhuang. The seeds of insect-resistant cotton varieties have low fat content, imbalance of protein and fat content, low total nutrient content, low supply of nutrients and energy required for supplying cotton seedlings to germinate and emerge, poor resistance to low temperature, slow emergence, and weak seedling potential. Therefore, the general time of planting insect-resistant cotton should not be too early. Must master the "proper" sowing principle. Generally good cotton fields, when the 5 cm ground temperature stable for 5 consecutive days through 14 °C ~ 15 °C, the soil moisture is good, humidity is suitable, in the absence of a strong cold weather process in the near future, you can choose sunny assault sowing. In normal normal years, medium-maturing insect-resistant cotton varieties, before and after Gu Yu (April 15th to 25th), are suitable for planting cotton mulch; the sowing date of open field cotton should be appropriately postponed to April 20-30; saline-alkali fields should be mastered. It is advisable to sow at a stable temperature of 16 centigrade for 5 centimeters of ground temperature, and to sow for the appropriate period of time after the rain until May 1st. In the scope of appropriate sowing, sowing time should be minimized, so that the cotton can be sown in the best period, in order to facilitate the realization of a complete seedling.
The appropriate time for planting cotton is to ensure early seedlings on the premise of keeping Miaoquan, Miaoqi and Miaozhuang. The seeds of insect-resistant cotton varieties have low fat content, imbalance of protein and fat content, low total nutrient content, low supply of nutrients and energy required for supplying cotton seedlings to germinate and emerge, poor resistance to low temperature, slow emergence, and weak seedling potential. Therefore, the general time of planting insect-resistant cotton should not be too early. Must master the "proper" sowing principle. Generally good cotton fields, when the 5 cm ground temperature stable for 5 consecutive days through 14 °C ~ 15 °C, the soil moisture is good, humidity is suitable, in the absence of a strong cold weather process in the near future, you can choose sunny assault sowing. In normal normal years, medium-maturing insect-resistant cotton varieties, before and after Gu Yu (April 15th to 25th), are suitable for planting cotton mulch; the sowing date of open field cotton should be appropriately postponed to April 20-30; saline-alkali fields should be mastered. It is advisable to sow at a stable temperature of 16 centigrade for 5 centimeters of ground temperature, and to sow for the appropriate period of time after the rain until May 1st. In the scope of appropriate sowing, sowing time should be minimized, so that the cotton can be sown in the best period, in order to facilitate the realization of a complete seedling.