Preparation method and use of stone sulfur mixture

Stone sulfur mixture is a fungicide used in agriculture made by boiling quicklime and sulfur with water. Among the many fungicides, the stone sulfur mixture is easy to use, inexpensive, effective, and has an inhibitory effect on a variety of bacteria. The properties and functions of stone sulfur mixture Stone sulfur mixture is strongly alkaline and corrosive, and its active ingredient is calcium polysulfide (CAS, SX).

Stone sulfur mixture has a strong rotten egg odor, unstable properties, and is easily decomposed by oxygen and carbon dioxide in the air. In general, stone sulfur mixtures are not resistant to long-term storage.

Spray method. The use of spray can control spiders, scale insects, rust, powdery mildew, etc. on trees and flowers, and prevent and control powdery mildew, and use o 3-0 after budding5 Baumé spray; To control Rosaceae tree rust, because its pathogenic bacteria overwinter in the host body of conifers (juniper, juniper, juniper, etc.) in the form of mycelium, so before the budding of trees in spring, the conifers should be sprayed with O5-O8 Baumé stone sulfur mixture to control the spread of pathogens and vines.

The prevention and control of lawn rust and rose rust has a good effect on spraying o Baumé stone sulfur mixture in the growing season; Post-bud spraying

Baumé's stone sulfur mixture has a special effect on the control of hawthorn leaf mites; Spraying 3-5 Baumé stone sulfur mixture before germination in winter and early spring can effectively control coxagus powdery mildew, apple flower rot and bacterial perforation of peach and plum, and kill overwintering scale insects nymphs, adult mites, nymphs and mite eggs.

Dry coating. After the tree pruning during the dormant period, the crape myrtle, pomegranate trunk and main branches were applied with the stone sulfur mixture stock solution, which basically eliminated the crape myrtle scale. Treatment agents.

The stone-sulfur mixture stock solution can disinfect and scrape the wounds, which can reduce the infection of germs and prevent the occurrence of rot and ulcer diseases.

What is the boiling method of stone sulfur mixture, and what is the ratio of lime and sulfur powder to water.

Stone sulfur mixture is made by boiling quicklime, sulfur and water, and the best ratio of the three is 1:2:10. When boiling, it is necessary to use a clay pot or a cast iron pot, and the use of copper or aluminum pot will affect the efficacy of the medicine.

The specific method of boiling is:

First weigh the high-quality quicklime and put it into the pot, add a small amount of water to dissolve the lime, then add enough water, after heating and boiling, filter out the slag, and then slowly pour the sulfur paste prepared with a small amount of hot water from the side of the pot, stir at the same time, and write down the water line, then add fire to boil, start the time when boiling (keep boiling for 40-60 minutes), the water lost in boiling should be supplemented with hot water, and add enough 15 minutes before stopping the fire.

When the solution in the pot is dark reddish-brown and the slag is blue-green, the combustion can be stopped. After cooling, filtration or precipitation, the clear liquid is the mother liquor of stone sulfur mixture.

The remaining residue of the boiling stone sulfur mixture can be prepared as a white coating to protect the trunk, which can prevent sunburn and frost damage, and has the functions of sterilization and insect control

Water = 5::20, or quicklime:stone sulfur mixture (residue):

Table salt: animal oil: water = 5:::

Second, the use of stone sulfur mixture.

1) Spray method.

Seedlings and lawns are sprayed. Use to control spider mites, scale insects, rust, powdery mildew, etc. on trees and flowers. In autumn and winter, after the fruit trees have fallen their leaves, they generally have to be sprayed with stone sulfur mixture when clearing the garden.

2) Dry coating method.

In early spring and late autumn, dilute the water and spray 180-400 times or evenly apply it to the trunk with a brush. Experience of Tai'an Garden Department - After the dormant period of tree pruning, the trunk and main branches of crape myrtle, pomegranate were painted with stone sulfur mixture, which basically eliminated the damage of crape myrtle scale.

3) Wound treatment agents.

Coating wounds reduces the infection of harmful bacteria and prevents the occurrence of rot and canker diseases.

4) Whitening agent.

5kg of stone sulfur mixture, quicklime, salt and slag can not be added), 40kg of water to prepare tree whitening agent. It is generally used in autumn and winter, and the effect of pest control is better, and the tree can continue to grow normally in the second year.

Dear, I'm glad to answer for you: Dear According to your description of Kaiku, here is the answer for you. Cover the hole, the use of stone sulfur mixture and precautions:

1. Drying: Use a brush to brush the stone sulfur mixture on the trunk of the Sunhao plant to control scale insects. 2. Spray:

When the plant is diseased, it should be sprayed with a stone sulfur mixture once a week. 3. Root irrigation: If the plant is infected with root rot, it can be watered with stone sulfur mixture to its roots.

4. Disinfection: After tree pruning, it is necessary to spray stone sulfur mixture, and pay attention to the concentration of the agent should not be too large.

The proportion of stone sulfur mixture: stone sulfur mixture kg + salt cavity 1 kg + quicklime 10 kg + water 80 kg.

Preparation method of stone sulfur mixture: boiled according to the ratio of 1 part of raw stone starved ash + 2 parts of sulfur + 10 parts of water.

First put the quicklime into the pot, add water to decompose, boil and filter out the slag, adjust the sulfur into a sticky state with warm water, pour it into the pot along the side of the pot, stir while heating and boiling, after boiling water for 1 hour, the solution in the pot becomes dark reddish-brown, and the dregs become blue-green, and the filtered clear liquid is the mother liquor of the stone sulfur mixture, which can be diluted with water according to the degree when used.

Is stone sulfur mixture a biopesticide?

Stone sulfur mixture is not a biological pesticide, it is a chemical, because the composition of stone sulfur mixture is lime and sulfur, both are chemical substances, lime is also called calcium hydroxide, is an alkaline compound, to be precise, calcium hydroxide, sulfur is sulfur, is a single element pure substance, the two mixtures belong to physical mixing, biological pesticides are pesticides made by biological methods such as fermentation.

Stone sulfur mixture can get rid of insects, the reason for rotten early is that stone sulfur mixture is one of many pesticides, and it is also one of the low-toxicity and efficient pesticides developed by our country, and can kill insects on crop leaves, but when using it, it must be required to choose a sunny day, and in addition, when using stone sulfur mixture pesticides, the leaves are required to be dry.

1. How to use: clear the garden in winter, spray 3-5 Baumé stone sulfur diluent, clear the garden in spring, spray 3-4 Baumé stone sulfur diluent, and spray Baumé stone sulfur diluent during the growth of fruit trees.

2. Precautions for use: When using, the temperature should not be lower than 4 or higher than 32, and cannot be mixed with pesticides such as Bordeaux liquid, pine resin mixture, copper preparation, etc.