Add soil conditioner. Spraying 500 times of soil conditioning agent on the surface of apple tree flower buds at the germination stage can improve soil structure and physicochemical properties, microbial population and enzyme activity, promote tree root growth, absorb water and mineral elements, and increase absorption. The number of roots has achieved the effect of rejuvenating the tree and increasing the resistance to freezing. Spray plant growth regulators. Spraying plant growth promoter PBO one week before apple tree blossoms, or spraying low concentrations of ethephon, naphthaleneacetic acid, and qingshang etc. before germination can inhibit tree germination, postpone flowering and avoid frost damage. For example, naphthalene acetic acid salt 250-500 mg/kg solution or 0.1%-0.2% qingxin solution was sprayed on the whole tree before germination, and bud initiation was inhibited, and the flowering period was postponed for 3 to 5 days. Increase fertilization material. Combining high-nitrogen fast-dissolving fertilizer with water before flowering can supplement tree nutrients, enhance tree vigor, and improve anti-freezing ability. Do a good job of anti-freezing during the flowering period of fruit trees Fry smoke during flowering period to prevent freezing. First, prepare the smoking materials before the apple tree blossoms, such as cut branches, leaves, weeds and scraped bark. After the flowering of the fruit trees, we must pay close attention to the weather forecast. In the event of a temperature forecast below 2°C, we must do a good job of anti-freezing work. First determine the wind direction, choose the top of the wind every other 20 meters on the ground empty pile of a pile of smoked materials, the material is too dry to be properly sprayed to facilitate the smoke. Secondly, in the orchard, the thermometer was placed. After 1 o'clock in the morning, close attention was paid to the change in temperature. When the temperature reached 0°C or below, the smoke should be ignited (be careful not to ignite and take a thick smoke). Smoke drifts into the orchard with the wind, which can increase the temperature of the orchard by 2°C to 3°C and achieve the purpose of antifreeze. After 5 o'clock in the morning, the temperature began to rise and it was possible to extinguish and stop smoking. This will not only reduce radiation cooling, but also increase the orchard heat, play a role in antifreeze. Smoke smoke has a certain effect on slight freezing damage above -2°C. If it is lower than -2°C, the control effect is not obvious. Spraying creams during flowering. Spraying 0.5% sucrose water or 0.3% borax solution or 0.3% molybdenum fertilizer in apple flower bud stage and flowering stage each has the effects of reducing freezing injury and increasing fruit setting rate. Anti-frost drugs should be dispensed with clean water. The spray should be uniform and thoughtful, and the flowers must be treated on both the positive and negative sides. This can effectively prevent the flower organs from frost and enhance the ability of the tree to resist cold. Do a good job of artificial pollination Fruit trees that have not pollinated during the flowering period suffer from frost damage and lose their ability to pollinate. If pollination and fertilization have already been completed at low temperatures, the fruit set will have less impact on fruit setting. Therefore, we must prepare artificial pollination in advance and prepare pollen in advance. Artificial pollination should be carried out in time after flowering of fruit trees to ensure fruit setting. If it has been subjected to frost damage, it is necessary to pollinate the late flowering and flowering buds in order to ensure a certain yield. In addition, the effect of pollinating fruit trees on the bees in the orchard is also relatively good, and time and labor are saved, and conditions can be adopted. Disclaimer: Some articles in this website have been transferred from the Internet. If you are involved in third party legal rights, please inform this website. phone Gas Generator,Nitrogen Generator,Gas Generator High Purity,Lab Medical Gas Generator Guangdong Widinlsa International Co.Ltd , https://www.guangdongwidinlsa.com
Doing antifreeze management before apple tree blossoms