Service time of stone-sulfur mixture

Stone-sulfur mixture is mainly used in winter and spring, generally in winter from the end of November to mid-early December, when the temperature is not lower than 4 ℃, when fruit trees enter a dormant period, all kinds of pests begin to overwinter, the resistance of diseases and insect pests is greatly reduced, and the effect of using stone-sulfur mixture for garden cleaning is very good, while spring is generally used from mid-late February to mid-early March, when fruit trees are just sprouting. The effect is better in the early stage of diseases and insect pests.

1. Service time of stone-sulfur mixture

1. From the end of November to the first ten days of mid-December, the temperature is probably above 4 ℃, the fruit trees enter the dormancy period, and all kinds of diseases and insect pests also begin to overwinter. at this time, the drug resistance will be reduced. when clearing the garden, it can be used with stone sulfur mixture, which can effectively remove the overwintering diseases and insect pests. If the temperature is below 4 ℃, it is easy to affect the control efficacy.

2. Before the fruit trees sprout in the coming spring, about the middle and lower stages of February to the upper and middle of March, stone sulfur mixture will be used in the early stages of diseases and insect pests to eliminate diseases and insect pests.

3. Stone-sulfur mixture is mainly used in winter and spring. In addition, stone-sulfur mixture can be used in the growing period of fruit trees. Note that the temperature can not be used when the temperature is over 32 ℃. Reasonable concentration should be used.

II. The concentration of stone-sulfur mixture

The main results are as follows: 1. In order to avoid pathogens overwintering on the fruit trees when the fruit trees enter the dormant period in winter, the dilute solution of stone-sulfur mixture with 3mure and 5 Baume degrees can be sprayed for prevention and control.

2. Before sprouting in spring, in order to control the spread and spread of pathogens, fruit trees can be sprayed with 3mur4 Baomedu stone sulfur mixture diluent for control.

3. During the growth of fruit trees, many kinds of diseases and insect pests, such as leaf mites, scale insects, aphids, powdery mildew, rot and rust, can be controlled by spraying 0.2-0.5 Baomedo stone sulfur mixture diluent, and pay attention to not exceeding 0.3 Baume degree in summer.

III. The use of stone-sulfur mixture

1. Spraying method: seedlings and lawns can be sprayed, which can effectively control diseases and insect pests such as shell insects, rust, red spiders and powdery mildew. After falling leaves in autumn and winter, stone-sulfur mixture can be sprayed once when clearing the garden.

2. Drying method: after tree pruning in dormant period, stone-sulfur mixture can be applied to crape myrtle, pomegranate trunk and main branch to eliminate the harm of crape myrtle scale. It can also be sprayed 180-400 times diluted with water in early spring or late autumn or evenly smeared on the tree trunk.

3. Whitening agent: the whitening agent is usually used in autumn and winter, which can effectively control diseases and insect pests and ensure the normal growth of trees in the coming year. The preparation method of whitening agent: 40 kg of water, 0.5 kg of salt, 5 kg of quicklime and 0.4 kg of stone-sulfur mixture.

4. Wound treatment agent: in order to avoid the occurrence of rot and ulcer, stone-sulfur mixture can be applied to the wound to reduce the infection of harmful bacteria.