Preparation method of slow-release fertilizer for cucumber planting

Abstract

The invention relates to the technical field of slow-release fertilizers for cucumber planting, particularly a preparation method of a slow-release fertilizer for cucumber planting. Polyvinyl alcohol, starch and liquid paraffin/glycerol are used as raw materials to prepare a coating slurry which is degradable; and a compact porous structure can be easily formed on the film surface to prevent the moisture from entering the film structure, thereby effectively controlling the slow release of the fertilizer and prolonging the slow-release period of the fertilizer. By controlling the coating slurry preparation process and proportioning, the mechanical properties and degradation rate of the coating slurry are controlled, thereby effectively satisfying the nutrient release demands of the cucumber growth period, and enhancing the cucumber yield. The temperature control treatment after fertilizer spraying is performed, so that the pore size and porosity of the film are controlled, thereby ensuring the cucumber slow-release fertilizer to satisfy the demands of the cucumber growth period, implementing quantitative nutrient release on the cucumbers, enhancing the utilization ratio of the fertilizer and lowering the cucumber planting cost.

Description

technical field [0001] The invention relates to the technical field of slow-release fertilizer for cucumber planting, in particular to a preparation method of slow-release fertilizer for cucumber planting. Background technique [0002] Cucumber, scientific name Cucumis sativus Linn, Cucurbitaceae cucumber plant. Also known as pickled cucumbers and cucumbers. The fruit is oily green or emerald green in color, with soft thorns on the surface. It is widely cultivated throughout China, and is now widely planted in temperate and tropical regions. Cucumber likes warmth and is not resistant to cold. It is one of the main greenhouse products and has high nutritional requirements. [0003] In the prior art, someone has done research on special fertilizers for cucumbers, such as patent application number 201510413918.3, which uses nitrogen fertilizers, phosphorus fertilizers, potassium fertilizers, decomposed earthworm manure, medium and trace elements, chelating agents, and medica...

AI Technical Summary

Problems solved by technology

[0004] With the continuous development of agricultural production, agricultural fertilizers are turned to slow-release and controlled-release fertilizer fields, so that the fertilizer effect of agricultural fertilizers can be sustained, fully utilized, reducing agricultural planting costs, and reducing environmental pollution rates; but in the prior art , in the preparation process of cucumber special fertilizers, most of the cucumber nutrient requirements are continuously researched and controlled, so that the obtained fertilizers can meet the growth needs of cucumbers, and most of the cucumber special fertilizers are directly mixed and granulated. As a result, after the cucumber special fertilizer is fertilized into the soil, it achieves rapid decomposition, making it difficult to meet the needs of cucumber growth for a long time, resulting in the need to fertilize cucumbers several times to meet the growth needs of cucumbers. At the same time, because most of the fertilizers used are The fertilizer of nitrogen, phosphorus and potassium elements is prepared by mixing materials, which makes it difficult to fertilize cucumbers at the seedling stage, which can easily lead to the death of cucumber roots and reduce production