North China Rainy Winter Wheat Region (North of the Huaihe River in Jiangsu and Anhui Provinces, Southeastern Henan Province) 1. Fertilization management principles (1) It is necessary to combine the suppression of the soil with the ploughing and ploughing before the wheat is returned to the green, to maintain the soil moisture, to improve the ground temperature to promote the transformation of the seedlings, and to improve the drought resistance of the wheat. (2) Fertilization of wheat should be grasped, and the principle of stratification should be repeated several times. It should be combined with meteorology, and a small amount of cover should be applied before and after rainfall and snowfall. Do not expose the fertilizer to the air after fertilization. 2. Fertilization advice (1) In the early spring, the soil is green or snow, and it is applied with chemical fertilizer or ditching strips. 5~7 kg of urea is applied per mu, and the soil is covered after fertilization. If there is rain in the middle and late growth period, urea can be applied again per mu. ~8 kg. In the phosphate-deficient field, 7-10 kg of diammonium phosphate is used per mu, and the potassium-deficient plot is applied with 15-20 kg of nitrogen-potassium compound fertilizer; after fertilization, it is covered. (2) In order to prevent the late drought, the soil should be repressed at the appropriate time before the soil is thawed and returned to green, and the soil is removed, the soil is soiled, and the soil is protected. The suppression should be combined with the ploughing of the ploughing. Before the wheat is sealed, wheat or corn stalks are covered per acre to reduce the evaporation loss of soil moisture. (3) If the number of stems is more than 800,000 years ago, the total number of stems is more than 800,000. Due to the excessive consumption of large nutrients in the wheat population, the spring wheat seedlings are yellow or the yellowing of the gaskets, and the topdressing can be carried out 2 to 3 times during the greening period. , 10 kg/time of high-nitrogen compound fertilizer per acre. (4) The wheat population is too small during the wintering period (before the greening, the total number of stems per acre is less than 450,000, and the three types of wheat fields with lighter leaf color and poor growth) should be timely management of fertilizer and water, and return to the jointing period. 2~3 times of topdressing, followed by rainfall 5~8 kg/mu per mu. (5) Combine with the control of sheath blight, one spray and three defenses to compensate for trace elements such as sulfur, zinc and boron, and spray urea and potassium dihydrogen phosphate to play the role of fertilizer. This article URL: Guiding Opinions on Scientific Fertilization Technology in Huahua North Rain and Winter Wheat Area in Spring of 2015 Acrylic Tape,Red Acrylic Tape,Acrylic Packaging Tape,Acrylic Double Sided Tape Kunshan Jieyudeng Intelligent Technology Co., Ltd. , https://www.jerrytapes.com