Compared with other crops, wheat has three distinct characteristics: First, wheat is highly dependent on soil fertility. Second, the amount of nitrogen fertilizer in the wheat field should not be too large. Otherwise, it will easily cause excessive growth in the early stage and reduce production in the later stage. Third, wheat is particularly sensitive to phosphorus. If there is a deficiency of phosphorus at the three-leaf stage, it will result in fewer secondary roots, delaying or not dividing tillers. Phosphorus deficiency after the three-leaf stage will delay heading, flowering and maturation, and the number of grains per ear will decrease, and the weight of 1000-grain will decrease.
First, the amount of fertilization (a) low-yield fields. Apply 3,000 kg of organic fertilizer per mu, 60 to 70 kg of standard phosphate fertilizer, and 25 kg of urea.
(2) Middle-class fields. Acre applies organic fertilizer 3000-4000 kg, cake fertilizer 50 kg, standard phosphate fertilizer 70-80 kg, urea 25-30 kg.
(3) High-yield fields. Apply 4,000 to 5,000 kg of organic fertilizer, 50 kg of cake fertilizer, 80 to 90 kg of standard phosphate fertilizer, 35 kg of urea, 10 to 15 kg of potassium fertilizer, and 1.5 to 2 kg of zinc fertilizer.
(4) Late buckwheat. About 4,000 kg of organic fertilizer, 75 kg of standard phosphate fertilizer and 25 kg of urea.
Second, the fertilization method (a) nitrogen fertilizer. Dry and thin low-yielding fields, which can not be watered all the year round, can use 70% of nitrogen fertilizer as base fertilizer, 30% of nitrogen fertilizer as top dressing, or all nitrogen fertilizer as base fertilizer. Medium and high-yield fields can use 50% of the total nitrogen fertilizer as the base fertilizer and 50% as the top dressing.
(2) Phosphate fertilizer. All the phosphate fertilizer can be used as the base fertilizer and applied in layers. 70% of the phosphate fertilizer is applied before the tillage, and 30% of the phosphate fertilizer is applied after the tillage.
(3) Organic fertilizer, cake fertilizer, potash fertilizer and micro-fertilizer, all of which are used as base fertilizer.
(4) Seed fertilizer. 4 to 5 kg of ammonium sulfate, or 2 kg of urea and diammonium phosphate.
Potassium Sorbate,Potassium Acetate,Ethyl Acetoacetate
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