Special water-holding and controlled-release fertilizer for wheat

Abstract

The invention discloses a special water-holding and controlled-release fertilizer for wheat. The special water-holding and controlled- release fertilizer for wheat comprises an inner fertilizer layer, a middle water-holding layer and an outer controlled-release layer, wherein the outer controlled-release layer is made of degradable materials; the middle water-holding layer is made of super absorbent resin; the inner fertilizer layer is special compound fertilizer for wheat. According to the invention, after the special water-holding and controlled-release fertilizer for wheat is applied, with the degradation of the controlled-release layer, the special fertilizer for wheat is gradually released, so that the long-acting release of the fertilizer is ensured and the demand for fertilizer in the whole growing period of the wheat is met; the decomposition and release time of the fertilizer is prolonged; the improvement on utilization ratio of the fertilizer nutrients is facilitated; therefore, the purposes of prolonging the available period of the fertilizer and promoting agricultural increase in yield are reached; the special water-holding and controlled-release fertilizer for wheat has the water-holding function and can effectively inhibit moisture evaporation and reduce the seepage and loss of soil moisture; the special water holding controlled release fertilizer for wheat is nontoxic, safe, environmentally friendly, odourless, and does not pollute plants, soil or underground water.

Description

[0001] Technical field [0002] The present invention involves a special water reservation control and fertilizer of wheat, which belongs to the field of crop fertilizer. Background technique [0003] Wheat is the collective name of wheat plant. It is a kind of grace -based plant that is widely planted around the world. It is one of the earliest crops in the world. Wheat's fruits are one of the human staple foods.Steamed buns, biscuits, noodles and other foods; beer, alcohol, vodka, or biomass fuel can be made after fermentation.Wheat is rich in starch, protein, fat, minerals, calcium, iron, iron, thiaine, riboflavin, niacin, vitamin A and vitamin C.In 2010, wheat is the world's total output (651 million tons), second only to corn (844 million tons). [0004] Drought is a major event in the world.Since the 1950s, with the rapid development of the industry and the sharp expansion of the population, the problem of warming and drought has become increasingly prominent.These issues h...

AI Technical Summary

Problems solved by technology

However, the existing controlled-release fertilizers for wheat have the problems of poor controlled-release effect and excessive application amount.

[0007] According to relevant studies, if a large amount of single-element chemical fertilizers are used in farmland, their nutrients cannot be effectively absorbed and utilized by crops. Some chemical substances such as nitrogen, phosphorus, and potassium are easily consolidated by the soil, forming various chemical salts, and accumulating in the soil. The soil nutrient structure is out of balance, the physical properties deteriorate, and the harmful metals and harmful bacteria in some plots exceed the standard, leading to the deterioration of soil properties

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