March orchard critical event
March is the key period for the management of apple tree grafting and other production. It is also a critical period for pest control. We must grasp the following issues in management. The reserve of new excellent varieties scion Collecting scions from the trees of fruit varieties with good fruit during the period of 67 years requires that the buds should be full and the branches should be full. Generally, annual branches of about 30 cm to 50 cm in length are selected, and 30 to 50 roots are bundles. The sand is ready for use. Grafting takes place before sprouting (from late March to early April). Prevention and control of pests 1. Clean the orchard and clean the dead branches, fallen leaves, weeds, and fruit and insects, and remove them from the orchard. 2. Scrape rot, branch bunion lesions (rough skin), fine scraping old skin, concentrated deep or burned. 3. Scrape and cure rot disease, apply biological or mineral agent after branch ring spondylosis, medicine is 5 times to 10 times 9291, thyrotropine, yamtoxin, rot will be clear, lime sulfur, etc., closed cutting saw mouth. The orchard with severe dermatophytosis was divided and treated 1/3 of the time. 4. Spraying 5 Baume degrees lime sulfur or 50% sulfur suspension 30 to 50 times before bud germination, can play a dual effect of disease prevention and pest control. 5. Orchard with severe lobular disease, spray 3% to 5% zinc sulfate solution or zinc ash before germination. The zinc ash was formulated at a ratio of 1:2:100. Renovation of tree plates In the orchard, the distance between the main trunk is 40 cm to 50 cm, and a ditch with a depth of about 20 cm is established on the periphery of the canopy. The width is determined according to soil quality, land ratio, irrigation quota, and age of the trees. Work lanes are left between the rows. Tantalum Sulfur Mixture 熬 熬 熬 熬 熬 熬 熬 熬 熬 熬 熬 熬 熬 熬 熬 熬 熬 熬 熬 熬 熬 熬 熬 熬 熬 熬 熬 熬 熬 熬 熬 熬 熬 熬 熬 熬 熬 熬 熬 熬 熬 熬 熬 熬 熬 熬 熬 熬 熬 熬 熬 熬 熬 熬 熬 熬 熬 熬 熬The ratio of raw materials is lime:sulfur:water=10:14:150. Tanning method: First, add enough water in the pre-pot to heat the fire. When the temperature in the pot reaches a hot degree, remove a few kilograms of water and pulverize the sulfur into a paste and pour it into the pot. When the water temperature reaches 80°C or so, the selected lime block is put into the pot, and the temperature in the pot quickly reaches the boiling degree. After adding lime, the pot is boiled for about 45 minutes. After cooking for more than 50 minutes, the concentration began to drop. Put 5 to 7 stones of size in the pot. Covering the pot when cooking will not cause the pot to overflow. After you finish the 1 pot, use the warm water of the pot to save the use of firewood. This method has the advantages of high undiluted liquid quantity, shorter use time, and 1 time improvement in work efficiency. It also has the advantages of not using stirrer pans, saving labor and firewood, and also utilizing the thermal effect of quick lime to make the reaction full, with sulfur powder leaving no residue. Improved varieties 1 trunk high access. Cut off the smoother part of the trunk, cut the section after cutting it with a knife, and graft it. The thicker trunk can graft several scions in different orientations of the section. 2. The backbone branches are connected high. Grafting on the main branch of the tree trunk, retaining the original tree-shaped skeleton, after high contact reshaping, rapid formation, suitable for tree-shaped disorders of the tree. 3. Long high pick. For a tree with a good tree shape, grafting may be performed on the branches or small branches of the original tree in order to restore the crown and early results as soon as possible. If the branch is bald and the branch is vacant, it can be patched by cutting the abdomen, subcutaneous abdomen and inlay. 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 YT-H706 YT-H706 Shenzhen Sunshine Technology Co.,Ltd , https://www.szyatwin.com