Special water retention 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

technical field [0001] The invention relates to a special water-retaining and controlled-release fertilizer for wheat, belonging to the field of special fertilizers for crops. Background technique [0002] Wheat is the general name of wheat plants. It is a gramineous plant widely planted all over the world. It is one of the earliest cultivated crops in the world. The caryopsis of wheat is one of the staple foods of human beings. After being ground into flour, it can be used to make bread, Steamed buns, biscuits, noodles and other foods; after fermentation, it can be made into beer, alcohol, vodka, or biofuel. Wheat is rich in starch, protein, fat, minerals, calcium, iron, thiamine, riboflavin, niacin, vitamin A and vitamin C, etc. In 2010, wheat was the second largest food crop in the world by total production (651 million tons), after maize (844 million tons). [0003] Drought is a major concern around the world. Since the 1950s, with the rapid development of industry an...

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.

[0006] 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

Images