Frost damage of fruit trees is divided into two categories: one is the winter freezing injury of evergreen fruit trees such as citrus, grapefruit, and orange, and the other is early spring frost damage of deciduous fruit trees such as apples, pears, and grapes. No matter what kind of frost damage is fatal to the fruit trees, most of the fruit growers can only watch the years of hard work and destroy them, and do nothing.
In fact, once the fruit trees suffer freezing damage, if the measures are conducted properly, not only can they lose less, lose money, and even increase production and income, so the choice of measures becomes even more important.
Here, farmers' friends are recommended to adopt an effective method and technique that can be used to prevent and rescue fruit trees from frost damage after extensive production practices.
"VitaCat" is a pure natural plant source plant protection product developed and researched and developed by Agnews Agricultural Environmental Biotechnology Company based on the principle of "plant allelopathy" for 30 years. It is certified by the European Union and the United States. The product not only has the physiological effects of down-regulating the root system, up-regulating the balanced growth of shoots, leaves, and fruits, but also initiates the self-protection mechanism of the crop, so that the crop produces systemic induced resistance and resists the invasion of external biological or abiotic factors.
The antifreeze mechanism is: after the application of “Biao†by plants, the respiratory rate is enhanced, the metabolic activity is increased, and the activity is increased; the chitin enzyme and protein enzyme in the plant can be effectively activated, the content of amino acids and chitin is greatly increased, and the cell membrane is increased The content of unsaturated fatty acids makes it able to grow normally at low temperatures, thus preventing and resisting freezing damage.
On April 14, 2010, many places such as Shanxi, Shaanxi, and Gansu experienced cold weather. Some farmers used this technology to avoid losses and increase production and income.
In the village of Rongchao Town, Wanrong County, Shanxi Province, Li Manshun, under the guidance of agricultural science and technology personnel, made a very significant test on the 4-year-old red grape with the “Baihu†prevention and mitigation of freezing injury (-4°C). effect.
On April 5, 2010, in the leafy period before the occurrence of frost damage, mu was sprayed on the leaves with 3 grams of water and 60 kilograms of water. On the 15th of April, the second day of frost damage occurred again. "Bui care" 6 grams of water 60 kg foliar spray.
The results of the survey on April 20 showed that with the “Bi-Yuan†treatment area, the average number of single plants sprouted was 175, the number of frozen plants was 35, the number of recovery was 160, and the freezing rate was only 5.7%. The average inflorescence was 8; without the “Biao†control area, the average number of buds per plant was 165, the number of freezes was 132, the number of restorations was 13, the freezing rate was 80%, and the average inflorescence of each plant was only Two. The use of “Bi-Yue†to prevent and mitigate freezing damage has been applied in large areas to fruit tree production in some areas. For example, the Pinggu District of Beijing is the famous “Pinggu Peach†producing area, and the planting area is more than 200,000 mu, which is attached great importance in the local agricultural sector. Next, it has been widely promoted and applied. "Baihu" is becoming a "magic weapon" for local farmers to prevent peach trees from frost damage, resist natural disasters, and increase their wealth.
How to use it on the evergreen tree: Use it in conjunction with the winter garden before freezing injury, use “Buihu†6-g watered 100-200 kg per mu, combined with high-grade foliar fertilizer, chitooligosaccharides, etc. For 1-2 times, freezing injury can be alleviated and restored.
How to use on deciduous fruit trees: Before and after the budding of fruit trees in early spring, before the onset of frost damage, use 6 to 9 grams of water per mu, 100 to 150 kg of potassium dihydrogen phosphate (0.3% to 0.5%), chitosan oligosaccharides. Foliar spraying can prevent late spring and cold injury. Immediately after the occurrence of frost damage, the “mu care†6-9g watered 100-150kg + shell oligosaccharides and potassium fertilizers in a timely manner, and then used once in intervals of 5-7 days. Freezing damage can be relieved and restored.
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