Preparation method of whitening agent for fruit trees

When planting fruit trees into winter, many fruit growers will choose to paint the trunk of fruit trees white in order to ensure that the fruit trees survive the winter safely. In order to achieve the effect of heat preservation and cold protection, sterilization and disinfestation. The operation of whitening fruit trees is very simple, and its control effect is also very good. So how to prepare the whitening agent for fruit trees? The following editor brings you several preparation methods of fruit tree whitening agent, let's have a look!

1. Copper sulfate lime whitening agent

The formula of copper sulfate lime whitening agent is mainly made of copper sulfate, quicklime and water. The proportion of which should be controlled at about 1:20:70. First dissolve the copper sulfate with the right amount of hot water, and then add about 2 to 3 water to dilute the copper sulfate. Then mix the remaining water with quicklime to form thick lime milk. When the two solutions dissolve almost the same and the temperature is similar, then mix the copper sulfate solution with the thick lime milk and stir constantly, so that the two solutions are evenly mixed together to form a whitening agent.

2. Lime sulfur whitening agent

The main formula of lime sulfur whitening agent is quicklime, sulfur, salt, bio-oil and hot water. In the preparation of lime sulfur whitening agent, the lime should be free of impurities, light in weight and bright in color. Because if the granular lime is not fully digested, then the lime will produce more heat to burn the bark. Sulfur powder should be as fine as possible. when preparing, first use hot water of about 50 degrees to soak and melt sulfur powder and salt. Then add the right amount of washing powder, and then put the lime powder in about 80 degrees boiling water to melt. Then mix the two solutions, then add salt and bio-oil to stir.

3. Stone-sulfur mixture quicklime whitening agent

The formula of quicklime whitening agent of stone-sulfur mixture is similar to that of lime-sulfur whitening agent. Just replace the sulfur with the original solution of stone-sulfur mixture, and the hot water can be used with ordinary cold water. However, the preparation method and order are different. First, the quicklime is aged with water, then the oil is mixed with lime water to form a lime milk, and then the raw liquid of stone-sulfur mixture and salt water are poured into it. Finally, the whitening agent can be fully stirred.

4. Slaked lime cement yellow mud whitening agent

Slaked lime cement yellow mud whitening agent is a kind of whitening agent which can be prepared without the use of chemicals. Mainly hydrated lime, cement, yellow mud-based. Among them, the configuration ratio is kept at about 1.25 at 1RV. In the preparation, the cooked lime, cement and yellow mud are directly stirred with water and continuously stirred into a slurry liquid. Insecticides and fungicides can be added according to the actual situation, no matter what kind of whitening agent, the preparation should be based on the principle of matching and use, and we should pay attention to control the dosage of each substance, and the specific dosage should be inquired from professionals.

The above is a simple introduction to the preparation method of fruit tree whitening agent. That's all for today's introduction. This article is for reference only. I hope it can help you all.