One-time special fertilizer for paddy rice and corn in southwest regions, and applying method thereof

Abstract

The invention relates to a one-time special fertilizer for paddy rice and corn in southwest regions, and an applying method thereof, and belongs to the technical field of production and application of fertilizers. The special fertilizer comprises, by mass, 24-28% of nitrogen, 6-10% of phosphorus pentoxide, 6-10% of potassium oxide, 1.5-2.5% of urea formaldehyde, 0.018-0.035% of a nitrification inhibitor, 0.005-0.015% of a urease inhibitor and 0.012-0.03% of a plant growth regulator. The one-time special fertilizer can meet the nutrient needs of the paddy rice and corn in the whole growing stage, and realizes good safety and no burnt roots or seedlings in the early stage and no nutrient shortage in the late stage. The one-time special fertilizer cooperates with the applying method in the invention, so the nutrient demands of the paddy rice and corn in the whole growth stage are guaranteed, the labor force is saved, and the contradiction between the multi-time fertilizing management method of the paddy rice and corn in southwest regions and the severe shortage of rural labor force resources is well solved.

Description

technical field [0001] The invention belongs to the technical field of fertilizer production and application, and in particular relates to a one-time special fertilizer for rice and corn in Southwest China and a fertilization method. Background technique [0002] Rice and corn are the field crops with the largest planting area in Southwest China. Both of them have a relatively long growth period. Among them, the growth period of rice is 120-140 days. Generally, the number of fertilization is 2-3 times, that is, 1 time of base fertilizer and 1-2 times of top dressing The growth period of corn is 120-130 days, and corn needs a large amount of fertilizer. Generally, at least 3 times of fertilizer are applied, that is, 1 time of base fertilizer and 2 times of top dressing. [0003] The southwestern region is mainly mountainous and hilly, and it is difficult to realize mechanization, and the labor cost is relatively high. Especially in the current severe shortage of rural labor r...

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Problems solved by technology

[0003] The southwestern region is mainly mountainous and hilly, and it is difficult to realize mechanization, and the labor cost is relatively high, especially in the current severe shortage of rural labor resources. The conflict between the multiple fertilization management methods of rice and corn and the current situation in rural areas is becoming increasingly serious

Moreover, due to the lack of one-time special fertilizers and related correct fertilization methods for rice and corn in Southwest China, farmers choose a large number of fertilization methods with a small number of times in order to save labor. At the same time, it causes a serious waste of fertilizer and poor economic benefits

[0004] Therefore, in the current fertilization process, in order to solve the problem of burning roots and seedlings in the early stage of one-time application of ordinary fertilizers, the fertilizer effect is insufficient in the later stage; 1 base + 2 topdressing of ordinary fertilizers, insufficient labor force and high cost of topdressing in the later stage; one-time application of long-acting slow-release fertilizers, the fertilization method Incorrectness leads to root burning and seedling burning in the early stage, and the fertilizer effect in the early stage cannot be released well, lack of fertilizer in the seedling stage, vegetative growth is slow, and there are problems such as vigorous growth of stems and leaves in the later reproductive growth stage, greedy green and late maturity, etc. There is an urgent need for a soil suitable for Southwest China Disposable special fertilizer for corn and rice and its fertilization method based on characteristics, crop cultivation characteristics and fertilizer requirements

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