In China's southern provinces and regions, Chinese cherries are still the main cultivars. At the same time, there are few fine varieties of Chinese cherries. The cultivars generally exhibit many shortcomings such as small fruit, sour taste, pre-harvest split, and fruit drop. The selection and breeding of China's cherry fine variety, a black pearl, has successfully made up for these shortcomings. How can we effectively prevent and control the occurrence of pests and diseases during planting?
The early leaves that are caused by serious leaf disease such as brown spot disease in the autumn of Qingyuan Park should be promptly cleaned and concentrated when the tree is fallen. At the same time, we must also remove dead trees and roots. We must thoroughly clean the countryside and burn them together.
The bark of the mature fruit trees during fruiting period of bark bark is rough, there are many cracks, and the rough skin is curled up. The temperature under these old cracks is higher than the temperature, and it is hidden. It is an important wintering place for pests and some germs. The insects such as star caterpillars, stink bugs, leaf roller moths, pear borer bugs, and red spiders all overwintered in rough skin, cracks, and cracks in fruit trees. Curing these old cracks is a key measure for preventing and controlling pests in winter. Therefore, they can be destroyed by scraping the skin in order to reduce the population density of the next year and the initial source of germs. When scraping the skin, it should be careful, comprehensive, and thorough. The surface should be as smooth as possible, without any frizziness. Avoid deep injuries and tender skin. Just scrape off the old skin and do not expose the wood. The rough skin on the main and side branches must be scraped off. In the case of fruit trees, it should be scraped and sickened. After scraping, it must be smeared with an agent such as 843 healing agent. It is usually 2-3 years to scrape the skin. Through careful and meticulous scraping, not only can these pests be eliminated, but also the bark can be renewed to promote tree growth and increase tree vigor. Sawdust scraped sawdust, concentrated burning.
In the winter of the trunk, due to the cold and warm temperatures, the sunny side of the trunk and big branches of the tree is exposed to the sun during the day, the temperature rises, the tree cells are active, and the temperature drops sharply at night, causing the tree to adapt to freezing and death. It is usually sun burning. After the tree is painted white, the heat of direct sunlight can be refracted. The temperature change of the tree epidermis is stable, which can reduce the risk of sunburn, freezing injury and night cream, and can kill wintering pests and bacteria in the bark. Therefore, whitening is performed before the soil is frozen after deciduous trees. The white painted parts are mainly trunks, and the young trees and incomplete tree crowns, the southern part of the diseased tree trunks and the tree branches must be recoated, and the whole tree should not be painted white to prevent burning.
Whitening agent formula: 6 kg of lime, 1 kg of sulfur, 1 kg of salt, 18 kg of water, the right amount of glue or bean powder. The concentration of the whitening agent is applied to the trees so that it does not scoop down.
After the phytosanitary control of fallen leaves, a tree or orchard with serious pests such as scale insects, dry rot, rot, etc., can be sprayed with diesel oil emulsion containing 5% of oil, or 95% oil emulsion 50 times or 45% crystal stone. Sulfur compound 10 times liquid seal garden (stone sulfur mixture and oil emulsion can not be applied at the same time, the two should be separated by 20 days, or easy to produce phytotoxicity), both bactericidal, but also exterminate, especially for scale insects have better Control effect. Reasonable garden closure can effectively reduce the orchard's overwintering base in the orchard.
The above are some tips for the prevention and control of diseases and pests in winter cherry. Everyone must do preventive work in advance in winter.
Vitamins are a group of organic compounds. It is a micronutrient required by living organisms, but generally cannot be produced by living organisms themselves, and needs to be obtained by means such as diet. Vitamin is a kind of low molecular compound necessary for the body to maintain normal metabolism and function. It is one of the six nutritional elements (sugar, fat, protein, salt, vitamin and water). Most must be obtained from food, and only a few can be synthesized in the body or produced by gut bacteria. The daily requirement of the human body for vitamins is very small, but once lacking, can cause a special kind of disease, called "vitamin deficiency disease". Primary vitamin deficiency can be caused by insufficient intake due to a lack of vitamins in food or a reduction in the amount eaten. Secondary vitamin deficiency can be caused by a decrease in the body's ability to absorb vitamins, an increase in the body's vitamin requirement, or the interference of some drugs. Our main products are: vitamin A, vitamin B1 (thiamin), vitamin B2 (riboflavin), vitamin B3 (niacin), vitamin B5 (pantothenic acid), vitamin B6, vitamin B7 (biotin), vitamin B9 (folic acid), vitamin B12, choline, vitamin C, vitamin D, vitamin E, vitamin K.
Vitamin And Enzyme,Vitamin C Oral Solution,Retinoic Acid Oral Solution,Ascorbyl Phosphate Powder
Xi'an Henrikang Biotech Co.,Ltd , https://www.xianhenrikang.com