Water and fertilizer in the rape back to green period must keep up
After the winter, rape enters the greening stage, at this time, fertilization should be combined with watering. With the rise of temperature, the winter rapeseed gradually recovered from the dormant state, the root system began to move, and new leaves grew. When more than 50% of the whole plant's heart leaves grew 0.5 to 1 cm, it entered the greening period. Winter rapeseed is a fertilizer-loving crop. It grows rapidly in the greening period and requires high water and fertilizer. In areas with irrigation conditions, it is necessary to irrigate the green water in time. Combine with watering and apply an appropriate amount of urea (3 kg / mu) or ammonium carbonate (5 -10 kg / mu). At the same time, in order to prevent the occurrence of diseases and insect pests, the dead branches and leaves in the field should be removed in time, and weeding should be carried out once in combination with weeding. For densely populated fields, appropriate seedlings should be set. The plant spacing should be 10-15 cm. Strong seedlings should be thin and weak seedlings should be dense. Topdressing and hydrating during the bud period. Winter rapeseed enters the bud stage shortly after returning to green, and the daily height of the rapeseed grows 2-3 cm, which is an important period for setting up a high-yield shelf. At this time, fertilizers should be applied in a timely manner in conjunction with rainfall to stabilize the rapeseed quickly and not prematurely. , Large branches and large pods to lay the foundation. In the returning period, the fields that will be topdressed in the future must be topdressed with manure and topdressing 10 kg / mu of ammonium carbonate. At this time, urea should not be used because its long-term fertilizer effect can easily lead to greed and late maturity. Fertile land, rapeseed fields with better growth, topdressing should be applied slowly and lightly; rapeseed with insufficient fertilizer at seedling stage, weak growth, should be applied as soon as possible. There is little rainfall and less application when the soil is dry. Areas with conditions should combine irrigation and fertilization. Spray foliar fertilizer in time during flowering. Rape enters the flowering stage after 15-20 days of pumping, and it is mainly reproductive growth. This is an important period of yield formation. At this time, the growth is rapid and the demand for water and fertilizer increases sharply. Foliar spraying should be performed in time to meet Need for growth and development, laying the foundation for high yield. Generally, a mixture of 2% urea, 0.3% to 0.5% potassium dihydrogen phosphate, and 0.2% borax is used for foliar spraying before the flowering period to overcome "flowers are not fruitful", and to increase flowers, angles, and fruit Rate, increase fruit number, thousand kernel weight and oil content. Spray once every 7 to 10 days, and spray 2 to 3 times continuously. Disclaimer: Some articles on this website are transferred from the Internet. If you have third party legal rights, please inform this website to deal with them. phone Kelp Knot,Delicious Kelp Knots,Sand-Free Kelp Knot,Fresh Kelp Knots DALIAN HAIBAO FOODS CO., LTD. , https://www.haibaoseafoods.com