1. Disease control In summer, it mainly prevents red and white spiders, leaf-leaf moths, leaf curl moths, aphids and early deciduous disease from injuring new shoots. For the control of red (white) spiders, insecticides and acaricides such as acaricides, pyridaben, and green cyclone can be used; the most effective agent for controlling leafminer moths is trimethoprim 3; for the control of leaf curl moths, pyrethroids can be used to kill Pyrethrin and lambda cypermethrin, with pyrethroids plus chlorvaluride 3, is more effective in preventing leaf moths; for controlling aphids, drugs such as imidacloprid are used. For the prevention and treatment of early defoliation (apple brown spot), difenoconazole, tebuconazole, mancozeb, polyoxin, agricultural resistance-120, thiophanate-methyl, Bordeaux solution and other agents are used. According to the occurrence of diseases and insect pests of young trees, scientific medicines should be used selectively. Generally, the wheat should be sprayed 1 to 2 times before harvesting to prevent aphids, leaf moths, brown spot disease, etc. The red (white) spiders, Leaf-leaf moths, leaf curl moths, and early deciduous disease are the focus of control. After the wheat is harvested, especially after the rainy season, the newly planted young tree young shoots are prone to iron deficiency yellow leaf disease, which should be corrected and prevented in time. Focus on spraying 200-300 times liquid ferrous sulfate plus 300 times urea at the location where the yellow leaf disease occurs The liquid can also be sprayed with organic iron fertilizers such as chelated iron, iron fulvic acid, and iron amino acid. Second, top dressing and watering In July, each tree chased 50 grams of urea and 50 grams of potassium dihydrogen phosphate, dug a 5-6 cm deep annular ditch around 30-40 centimeters from the trunk, applied chemical fertilizer and covered the soil, such as single application of urea can be sprinkled on the small Around the tree (also 30 to 40 cm away from the small tree), then look at the rainfall, if the weather is dry, water it in time. The tree should be sprayed with urea 300 times solution or potassium dihydrogen phosphate 300 times solution every 10-15 days, or 300 times solution of urea in combination with medicine. Before July, urea was sprayed mainly to promote growth. Later, potassium dihydrogen phosphate was sprayed to strengthen branches. In the early stage, depending on the weather, water as much as possible to keep the soil moist and promote the vigorous growth of young trees. Control irrigation in August. Pay attention to the timely drainage of the orchard during the rainy season. After raining or watering, we must hoe in time to loosen the soil and maintain the soil moisture. In addition, weeding should be combined with hoeing to remove weeds. 3. Tree Management 1. Wipe off the budding or lateral shoots below 50 to 60 cm from the ground in time. From 2.7 to August, the length of the center tip exceeds 60-70 cm, and the topping (pinch) is carried out, the purpose of which is to strengthen the shoot tips and promote the lateral shoots. The center of the apple tree that has been cultivated with the three best varieties cannot be topped. 3. For the treatment of the second shoot under the center shoot (i.e. competing shoots), take methods such as softening the branch and spraining the other shoots to change their growth direction, weaken the basic growth, and promote the strong growth of the centre shoot. Up to 7 to 8, the second shoot can be removed. Apple trees that have been cultivated by Sanyou are directionally sprouting before germination and erasing the second and third buds (spikes) after cutting, and the length of the new shoots is from the end of May to the beginning of June. When it is 20-25 cm, use two pointed toothpicks to open the base angle of the new shoots. When the new shoots are 40 cm, the branches are softened once, and when the new shoots are 60 cm, the branches are softened again. 90 to 110 degrees. 4. If the center tip is skewed or the small tree does not grow upright, put a pole next to the small tree, tie the center tip or the small tree with a rope, and straighten it. 4. Leave a protective tape To ensure the normal growth of newly planted young trees, a 1 meter wide protective tape must be left. When planting apple trees in the wheat field, the tree tray should be expanded as much as possible to prevent the young tree from declining or dying due to changes in the small environment around the young tree after the wheat is harvested. A 1 meter wide protective belt is also left after the wheat is harvested. No high-stalk crops such as corn and sorghum are allowed to be planted between rows. It is better to plant low-growing crops such as peanuts, mung beans and sweet potatoes. In addition to the unsuitable cultivation of vegetables harvested in autumn, other vegetable varieties can be arranged. Disclaimer: Some articles of this website are transferred from the Internet. If the legal rights of third parties are involved, please inform this website for processing. phone Wafer Ice Cream Cone,Flat Mouth Ice Cream Cone,Cylindrical Torch Wafer Cone,Torch Cones Wafer Cone Tianjin Yongkang Food Co., Ltd , https://www.yongkangfood.com