Fertilizer for coating paddy seeds

Abstract

The invention relates to a fertilizer for coating paddy seeds. The fertilizer is prepared by grinding active ingredients such as nitrogenous fertilizers, phosphate fertilizers, potash fertilizers and other macroelement fertilizers, zinc fertilizers and other trace element fertilizers, compound sodium nitrophenolate as a plant growth regulator and the like, and inactive ingredients such as acid-soluble chitosan as a compound film former, coloring matters, addition agents and the like. The invention relates to a novel fertilizer used for coating paddy seeds. The quality ratio of the fertilizersand the seeds ranges from 1:25 to 1:50. When coated, the surface of the seed can form a fertilizer film with compact film pores, and the fertilizer nutrient can be released slowly through the film pores with a lasting period up to 45-60 days. The invention is applicable to coating various paddy seeds under different ecological conditions, and raising seedlings on a watered bed, raising seedlings on a dry bed, transplanting seedlings or direct seeding can accelerate the growth of the seedlings, improve the resistance of the seedlings, increase the seedling establishment percentage by 8.3%-13.7%, save the fertilizers by 19.5%-27.3%, and save the seeds by 8.1%-13.2%. The invention has the advantages of simple production, low cost and convenient use, and has obvious economical, social and ecological benefits.

Description

technical field [0001] The invention relates to a preparation for coating rice seeds and covering the surface of the seeds with fertilizer, and belongs to the fields of novel fertilizer preparation technology and crop cultivation technology. Specifically, it is a rice seed coating fertilizer, which is a rice seed coating fertilizer prepared by grinding macronutrient fertilizers, microelement fertilizers, plant growth regulators, compound film-forming agents, pigments and auxiliary agents. Background technique [0002] Fertilizer is one of the most important means of production in agricultural production. Since German chemist Liebig J V put forward the theory of plant mineral nutrition in 1840, fertilizer has become a powerful force to promote the development of agricultural production in the world. However, after more than 100 years of development, the release rate of fertilizer nutrients has been unable to be controlled artificially. The release rate is too fast, and the c...

AI Technical Summary

Problems solved by technology

[0004] (1) Existing slow / controlled release fertilizers only modify the structure of ordinary fertilizers, or coat ordinary fertilizers, and do not change the carrier and fertilization methods of ordinary fertilizers. Fertilizers are still applied on the soil surface where crops grow or contain water On the soil, the fertilizer is far away from the root system of the crop, and it is easy to be leached by rain, which leads to the ineffective effect of improving the nutrient utilization rate of the fertilizer

[0005] (2) The coating materials of the existing slow / controlled release fertilizers are expensive, the equipment investment is large, the fertilizer production process is relatively complicated, the coating process requires long-term high temperature (80-170°C) treatment, and the energy consumption is large, resulting in slow / controlled release. Fertilizer production costs are high, and its price is 5 to 14 times that of ordinary fertilizers before coating

[0006] (3) Existing slow / controlled release fertilizers use toluene, xylene, petroleum ether, turpentine and other petroleum solvents to dissolve coating materials, which are highly toxic and harmful to the health of production and application personnel; some use trichlorethylene, tetrachloride Ethylene and other solvents will destroy the ozone layer and cause air pollution

[0007] Due to the above reasons, the application scope of existing slow / controlled release fertilizers is very limited, mainly used in high-value economic crops such as flowers, lawns and fruits, and rarely used in field crops such as cotton and rice