Red date thick rotten disease preventing agent and preparation method thereof

Abstract

The invention discloses a red date thick rotten disease preventing agent and a preparation method thereof. The red date thick rotten disease preventing agent is compounded from the following raw materials in parts by weight: 15-50 parts of calcium polysulfide, 5-20 parts of nitrogen-phosphorus-potassium compound fertilizer, 2-7 parts of sodium carboxymethyl cellulose and 2-10 parts of water. The preparation method comprises the following steps: (1) dissolving sodium carboxymethyl cellulose in water in a container; (2) orderly adding calcium polysulfide mother liquor and nitrogen-phosphorus-potassium compound fertilizer into another container, and slowly heating to 40-50 DEG C while stirring until the calcium polysulfide mother liquor becomes clear; and (3) adding the sodium carboxymethyl cellulose water solution in step (1) into the clear calcium polysulfide mother liquor in step (2), stopping heating, and stirring to normal temperature. The red date thick rotten disease preventing agent is convenient to apply, has obvious prevention and control effect, and has the advantage of no pollution; and the preparation method is simple, and has the advantages of accessible raw materials and low cost.

Description

technical field [0001] The invention relates to the technical field of fruit or vegetable treatment, in particular to a jujube pulp and rot prevention agent and a preparation method thereof. Background technique [0002] Jujube fruit rot disease is a new disease. Only a small number of fruit pathogenic bacteria are harmful, and most of them are fungal pathogens. Once these bacteria have a suitable living environment, they will develop a large number of pulp and rot fruits. Through field investigation, it was found that the pathogen of red jujube fruit rot disease is a weak parasite, and the main causes of the disease are: 1) In order to pursue yield, the fruit growers applied excessive nitrogen fertilizer, which caused the tree body to grow excessively, the tree vigor to weaken, and the ability to resist diseases and insect pests to decrease; 2) The jujube trees are planted too densely, the field canopy density increases, the ventilation and light transmission are poor, and ...

AI Technical Summary

Problems solved by technology

However, because the lime sulfur mixture is strongly alkaline, it can only be used in winter and spring, and the use of 3-5 Baume degrees of lime sulfur mixture in summer will cause serious phytotoxicity and cause the death of fallen leaves on the tree body; Lime sulfur mixture with a concentration of 0.3-0.5 degrees Baume is not effective or even effective in controlling diseases and insect pests on fruit trees.

The control effect of using high-concentration lime-sulfur mixture is ideal, but it is easy to cause phytotoxicity. However, it cannot be used during the growth period of fruit trees, and good pesticides are limited by the use time. This is a problem that agricultural technicians and fruit growers have been thinking about for a long time and have always wanted to solve.