Northwest irrigated wheat area (mainly mainly spring wheat, including central Inner Mongolia Autonomous Region, northern Ningxia Hui Autonomous Region, central and western Gansu Province, eastern Qinghai Province and Xinjiang Uygur Autonomous Region)
1. Fertilization management principles
(1) Determine the target yield according to soil fertility, reduce the input of nitrogen and phosphorus fertilizer, supplement the potassium fertilizer, and supplement the micro-fertilizer in an appropriate amount.
(2) Adding organic fertilizer, the whole amount of straw will return to the field and fertilize the soil, and promote organic and inorganic cooperation.
(3) "N, P, K and K, early application of base fertilizer, skillful application of top dressing." Guarantee Miao Qi, Miao Quan. Appropriate topdressing, to prevent the wheat from overwhelming in the early stage, and later to reduce fertilizer and reduce production.
(4) Fertilization should be effectively combined with irrigation. Emphasis is placed on early application of base fertilizer, machine sowing fertilizer, top dressing before irrigation, and application of zinc and boron micro-fertilizers at the booting stage.
2. Fertilization advice
(1) Recommended 17-18-10 (N-P2O5-K2O) or similar formula. (2) The production level is 300~400 kg/mu, and the recommended dosage of formula fertilizer is 20~25 kg/mu. From the start-up period to the jointing stage, combined with irrigation and topdressing urea 10~15 kg/mu.
(3) The production level is 400~550 kg/mu, and the recommended dosage of formula fertilizer is 30~35 kg/mu. From the start-up period to the jointing stage, combined with irrigation and topdressing urea 15~20 kg/mu.
(4) The production level is 550 kg/mu or more, and the recommended dosage of formula fertilizer is 35~40 kg/mu. From the start-up period to the jointing stage, combined with irrigation, 15~20 kg/mu of urea.
(5) The production level is below 300 kg/mu, and the recommended dosage of formula fertilizer is 15~20 kg/mu. From the start-up period to the jointing stage, combined with irrigation and 5~10 kg/mu of urea.
This article URL: Guiding Opinions on Scientific Fertilization Technology in the Northwestern Irrigation Wheat Region in Spring 2015
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