Special root-inducing slow release high-efficiency fertilizer for double cropping rice and preparation method thereof

Abstract

The invention discloses a special root-inducing slow release high-efficiency fertilizer for double cropping rice and a preparation and application method thereof. The preparation method comprises the following steps: mixing and blending nitrogen fertilizer and compound synergist in a blender for 3-5 minutes to obtain root-inducing slow release high-efficiency nitrogen fertilizer; and then, continuing to mix with phosphorus fertilizer and potassium fertilizer for about 5 minutes to obtain the finished fertilizer, wherein the compound synergist is prepared by uniformly mixing the following materials in percentage by weight: 3.4-3.8% of borax (B), 2-2.5% of hydroquinone (HQ), 0.9-1.4% of dicyandiamide (DCD), 33-36% of silicon fertilizer (SiO2), 9-14% of polyaspartic acid (PASP), 31-38% of humic acid (HA) and 9-12% of phosphorus activator. The finished fertilizer is used as basal fertilizer to be completely applied after rice soaking and in the early rice transplanting stage, and no additional fertilizer is required for the later stage; the amount of applied fertilizer for early rice is 40-45 kg / mu; and the amount of applied fertilizer for late rice is 50-55 kg / mu. The fertilizer disclosed by the invention has the dual effects of promoting root growth and delaying nutrient release, can greatly improve the nutrient utilization ratio and rice yield, is convenient to produce and use, and has the advantages of high technical compatibility, low cost, environment friendliness and the like.

Description

technical field [0001] The patent of the present invention relates to a special fertilizer for slow-release high-efficiency double-cropping rice by adding a compound synergist to the fertilizer to achieve synergy between promoting the growth of rice roots and delaying the release of fertilizer nutrients, and effectively improving nutrient utilization. The preparation and using method thereof are mainly used in field production of double-cropping rice in southern China, and belong to the field of fertilizer production and application. Background technique [0002] Rice is one of the most important food crops in China and has an important strategic position in China's food production. According to statistics, my country's rice area accounts for about 29% of the total area of ​​grain crops, and its total output accounts for 44% of the country's total grain output. Among them, double-cropping rice accounts for more than 25% of the country's rice planting area, mainly concentrate...

AI Technical Summary

Problems solved by technology

[0005] In summary, my country has made some progress in the research and development of nitrogen fertilizer synergists on rice, but there are still unstable effects of increasing yield, and it is not suitable for different soils, different nitrogen source fertilizers, different planting systems and different climate characteristics. However, most of the research has focused on the development of nitrogen fertilizer synergist formulations, and on the basis of synergistic nitrogen fertilizers in southern double-cropping rice areas, further synergizing phosphorus fertilizers, potassium fertilizers and micro-fertilizers and synergistically promoting root growth, Related fertilizer production technologies and patents that can effectively improve nutrient use efficiency have not been reported