Organic-selenium-enriched slow release fertilizer specially used for strawberries

Abstract

The invention relates to an organic-selenium-enriched slow release fertilizer special for strawberries. The organic-selenium-enriched slow release fertilizer is prepared from the following raw materials in parts by weight: 2-5 parts of selenium source (based on the content of selenium), 20-30 parts of attapulgite, 25-40 parts of sodium humate, 0.5-1.5 parts of sodium carboxymethylcellulose, 19 parts of nitrogenous fertilizer (based on the content of nitrogen), 10 parts of phosphate fertilizer (based on the content of phosphorus), 19 parts of potassium fertilizer (based on the content of potassium) and 20 parts of water. The organic-selenium-enriched slow release fertilizer can meet the requirement of the strawberries for selenium fertilizer; moreover, due to the addition of nitrogen phosphorus and potassium fertilizers, the nitrogen phosphorus and potassium fertilizers can promote strawberry growth and quality after the slow release fertilizer is applied.

Description

Technical field: [0001] The invention belongs to the technical field of agricultural fertilizer production, and in particular relates to a special fertilizer rich in organic selenium for strawberries and a preparation method thereof. Background technique [0002] Strawberry is also called cranberry, raspberry, perennial herb, is a kind of red flower and fruit. Strawberries are heart-shaped in appearance, delicious, red and tender, with juicy pulp and a special rich fruit aroma. It has the effects of nourishing the lungs and promoting body fluid, invigorating the spleen and stomach, diuresis and swelling, antipyretic and heat-dispelling, etc. Strawberry is rich in nutritional value, and its Vc content is about 10 times higher than that of apples and grapes. Diet therapy can also treat diabetes, dry cough and anemia. [0003] Selenium is a kind of trace element, the content in the human body and the required daily intake are also very small, but it plays an important role ...

AI Technical Summary

Problems solved by technology

There are many special fertilizers for strawberries (patent numbers CN 102557833 A, CN 102850109 A and application number 200710115272.6, etc.), these special fertilizers only provide certain nutrients for strawberry growth, but cannot provide certain selenium sources for strawberries to use

For example, there are many problems in selenium-enriched fertilizers, such as the low plant utilization of fertilizers sprayed on the foliage, and the frequent spraying, resulting in a large amount of manpower waste. At the same time, it is easily affected by the weather. Disadvantages such as low conversion rate

A selenium-enriched strawberry nutrient disclosed in Chinese patent CN 101781144 B uses a nano-selenium plant nutrient mixed with organic fertilizer and microbial fertilizer to be applied to the soil as a base fertilizer for the cultivation of selenium-enriched strawberries. The present invention requires the use of specific plants Nutrients, at the same time, the ratio of nutrients is not clear

Application No. 201310005446.9 discloses the use of selenium-enriched flax cakes mixed with other organic matter and various fertilizers to cultivate selenium-enriched strawberries. Among them, selenium-enriched flax cakes have limited resources and cannot be mass-produced