Simple and labor saving fertilization method for summer maize under wheat and maize rotation mode

Abstract

The invention relates to a simple and labor saving fertilization method for summer maize under a wheat and maize rotation mode. The method comprises the steps: harvesting wheat, then, smashing strawsto be completely returned to the field, next, sowing maize, and applying elementary substance fertilizers including a nitrogen fertilizer, a phosphorus fertilizer and a elementary fertilizer at one time during sowing maize, wherein topdressing is not needed in the whole growth period. The nitrogen fertilizer is a mixture of coated urea and ordinary urea, wherein the mass ratio of the coated urea is 60-80%, and the mass ratio of the ordinary urea is 20-40%. The fertilizers applied in the method are the elementary substance fertilizers by which the demands for nutrients in the whole growth period of maize can be met and topdressing is not needed in the whole process, so that the labor cost is reduced, the utilization ratio of the nitrogen fertilizer is greatly increased, the leaching loss ofthe nutrients along with rainwater is reduced, the nutrient supply during stem elongation and booting of maize is guaranteed, the yield of maize is greatly increased, stable production and yield increment is favorably realized, and meanwhile, the investment cost is greatly reduced.

Description

technical field [0001] The invention relates to a light and simple fertilization method for summer corn under a wheat-corn rotation mode, and belongs to the technical field of agricultural fertilization. Background technique [0002] Shandong Province is a large agricultural province. According to statistics, the agricultural population accounts for about 62.4% of the total population. The structural imbalance of the rural labor force, especially the extremely unreasonable distribution of the age structure, makes the current rural population engaged in agricultural production mainly women and the elderly. This phenomenon of unreasonable distribution makes it difficult for the existing labor force to undertake a huge workload when concentrated farming is busy, and it is difficult to achieve fine management of agricultural production management. The phenomenon of unscientific fertilization methods, difficulty in ensuring topdressing of crops, and impossible to discuss the rati...

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Problems solved by technology

Chinese patent document CN102210212B discloses a slow / controlled-release nitrogen fertilizer fertilization method in wheat and corn rotations. Make the crops lack fertilizer in the early stage, and at the same time, the amount of controlled release fertilizer is relatively high, so the input cost will be relatively high; For the purpose of high yield, although controlled-release urea is used, its dosage is too high, the cost input increases, and at the same time it still needs to be combined with base topdressing, which does not solve the contradiction of labor shortage during topdressing; Simplify the method of fertilization. The topdressing of the corn season needs to be in the big trumpet period. In addition, the summer is hot, the production conditions are not conducive to manual topdressing, and the farmers are working outside. It is difficult to return to the countryside to topdress during this period, which cannot really solve the problem of labor shortage.

[0006] Aiming at the various problems of corn fertilization at present: shortage of rural labor force, excessive fertilizer, high cost input, short fertilizer effect period, topdressing must be used to meet the nutrient demand of crops throughout the growth period, and the contradiction between fertilization frequency and labor shortage , there is an urgent need to provide a simplified fertilization method that not only guarantees crop yield, but also saves labor, has low cost, can meet the nutrient requirements of corn throughout the growth period without topdressing, has obvious environmental effects, and truly realizes the wheat-corn rotation mode.

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