"Eight Suggestions" for Wheat Fertilization in Spring
Principles of Fertilization (1) According to the growth of the seedlings and soil moisture, apply nitrogen fertilizer in batches to appropriately increase the application ratio in the middle and late stages of jointing; scientifically determine the amount and time of topdressing according to the amount of base (base) fertilizer, seedling condition, temperature and soil fertility; Topdressing for soil, seedlings, and time. (2) According to the soil moisture and water and fertilizer capacity, reasonably determine the amount and time of irrigation to achieve the integration of water and fertilizer management. (3) Promote and control measures shall be taken in time during the wheat return to green jointing stage to promote the transformation of weak seedlings and increase the rate of ear formation; control flourishing growth and prevent late green lodging. Fertilization recommendations (1) The three types of wheat fields where the total number of stems per acre is less than 450,000 before returning to green, the leaf color is lighter and the growth is poor, the fertilizer and water management should be carried out in time. The spring topdressing can be divided into two. For the first time, 5-6 kilograms of urea per mu was applied with watering during the re-greening period; for the second time, 6-7 kilograms of urea per mu was applied with watering during the jointing period. (2) Before turning green, the total number of stems per acre is between 450,000 and 600,000, and the population is small in the second-class wheat field. During the wheat rise period, combined with watering, topdressing 8-10 kg of urea per acre. (3) The total number of stems per mu before returning to green is between 600,000 and 800,000. A type of wheat field suitable for the colony can be combined with watering and topdressing 10-13 kg of urea per mu during the jointing period. (4) For wheat fields with a total number of stems per acre greater than 800,000, dark green leaves and a trend of vigorous growth before returning to green, intertillage suppression and chemical control measures should be adopted during the returning period to postpone the time of nitrogen fertilizer application and reduce the amount of nitrogen fertilizer to control the growth of the population. Long, prevent late lodging and late maturity. Generally, 6-8 kg of urea per mu can be topdressed in the late stage of jointing. (5) Nitrogen and phosphorus compound fertilizer should be applied to the base fertilizer without phosphate fertilizer or phosphorus-deficient fields. If no or less potassium fertilizer is applied, it is recommended to apply nitrogen and potassium compound fertilizer during the greening or jointing period; there is no irrigation condition or effective precipitation. Urea and potassium dihydrogen phosphate can be sprayed on the leaves in spring to fertilize the water. (6) Foliar spraying of potassium dihydrogen phosphate, boron fertilizer and zinc fertilizer during the wheat grain filling period can prevent dry hot wind and lodging, improve the grain filling intensity and increase the grain weight. (7) For wheat fields in sulfur-deficient areas, if superphosphate, potassium sulfate, and sulfur-based compound fertilizer are not applied as base fertilizer, ammonium sulfate should be selected for topdressing in spring, with an amount of 20-25 kg per mu. (8) Do not harrow the ground after rotary tillage, resulting in too deep sowing and weak seedlings of deep sowing, few tillers, and weak seedlings, it is recommended to topdress 10-12 kg of urea during the greening period. Disclaimer: Some articles on this website are transferred from the Internet. If the legal rights of a third party are involved, please inform this website for processing. phone Enema Health Care ( Invisible ) JIAMAI a completely had subsidiary of Albert Novosino, responsible for the worldwide trade business. Enema Bag, PVC Enema Bulb, SS Enema Bucket, Enema Device Ningbo Jiamai Internet Technology CO., Ltd. , https://www.jmcuhyd.com
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