A kind of special fertilizer for reducing peanut continuous cropping obstacles in red soil area, its preparation method and usage

Abstract

The invention discloses a red-soil-region peanut continuous-cropping obstacle reducing special fertilizer, a preparation method and a usage method. The special fertilizer is composed of, in percent by weight, 10-30% of decomposed dry bird excrement, 10-30% of humic acid, 10-20% of urea, 20-40% of calcium-magnesium-phosphorus fertilizer, 10-15% of potassium chloride, 0.5-2% of borax, 0.5-2% of zinc sulfate, 0.01-0.05% of ammonium molybdate, 0.005-0.02% of compound sodium nitrophenolate, 0.001-0.01% of sodium alpha-naphthyl acetate, 0.01-0.05% of hymexazol, and 0.01-0.05% of diazinon. The special fertilizer is applied red-soil-region field on which peanut is continuously cropped for three or more years with the usage amount of 2000-2500 Kg / hm<2>, the usage method comprises that the fertilizer is completely basally applied for one time, or the fertilizer is applied for two times according to the base-fertilizer topdressing-fertilizer weight ratio of 2:1, the base fertilizer is applied in furrows before peanut is sowed or is spread over the whole field when ploughing is performed, topdressing is combined with intertillage weeding, and fertilization and earthing up are performed. The special fertilizer is verified to be capable of increasing peanut output by 15-25% compared with a conventional fertilizer by applying the special fertilizer to a large field on which peanut is continuously cropped for 10 years or more at 2012 and 2013, and the application method is simple, reasonable, and high in operability, and exhibits technical progress.

Description

technical field [0001] The invention relates to the technical field of crop planting fertilizers, in particular to a special fertilizer for reducing obstacles to continuous cropping of peanuts in red soil areas, a preparation method and usage. Background technique [0002] Continuous cropping obstacle refers to the phenomenon of reduced yield, poor quality and poor growth status after the continuous planting of the same crop or related crops, even under normal management conditions. [0003] Red soil is an important soil type in my country. It is mostly distributed in the mid-subtropical vast low mountain and hilly areas between 25° and 31° north latitude, with a total area of ​​56.9 million hm 2 , the soil properties are mainly characterized by board, lean, sour, and sticky. Peanut, as an important dryland oil crop in this area, has a large planting area and relatively concentrated production areas. Many places have formed a traditional dominant peanut planting industry, re...

AI Technical Summary

Problems solved by technology

[0009] Among the special fertilizers mentioned above, they are only involved in alleviating certain aspects of peanut continuous cropping obstacles, and mainly increase peanut production through balanced nutrients and reducing pests and diseases. However, due to differences in peanut planting areas and soil types, peanuts mainly The types of pests and diseases and the physical and chemical properties of the soil are different. The fertilizer absorption rules of peanuts, the nutrient distribution ratio of special fertilizers, the key points of pests and diseases control and the requirements of soil improvement are all different. To sale of exclusive fertilizer for peanut continuous cropping obstacle

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