Weeds are harmful to cuttings of willow trees, especially narrow-grained weeds, which often affect the root development of willow trees. Manual weeding can easily injure the seedlings, and it is time-consuming, time-consuming, and expensive. It is also difficult to remove the weeds. Scientific use of chemical weeding techniques has a certain period of validity, which can greatly reduce the cost of weeding without damaging the roots and not damaging the buds. Chemical Weeding Techniques: 1. Apply 23.5% Goulash Herbicide before sprouting before inserting the bud before sprouting. Use 50 to 80 ml per 667 square meters and dilute to 50 kg. Evenly spray on the top of the soil. Treatment; or with 50% Praxanthine WP, 150 ml per 667 square meters, watered 50 kg, evenly sprayed on the bed, can effectively prevent one-year single, dicotyledonous weeds. Can also be used 20% paraquat liquid agent, per 667 square meters with a commercial volume of 100 ml, watered 50 kg, kill the weeds will sprout, the above drugs have no effect on sprouting and growth. 2. During the growth period, the 1-year-old seedlings can be treated with Gore or Paraxon, and the poisonous soil should be made according to the above dosage. The seedlings should be sprinkled on the seedbed and the soil on the seedlings must be removed to prevent phytotoxicity and effectively prevent 1 year Gramineae, Asteraceae, Polygonaceae, Polygonaceae, and other weeds; or use 10.8% of high-efficiency herb oil, 25-50 ml per 667 square meters, watered 50 kg, evenly sprayed for foliar treatment, effective To prevent 1 year old grass weeds, it is safe for seedlings; if there are more dicotyledonous weeds in the nursery, it can also use 10.8% of high-efficient gaiseng EC and 23.5% of Guer EC as a mixture of 1:1. The treatment of leaf surface between seedlings can effectively control one-year-old single and dicotyledonous weeds without affecting seedling growth. For poplars over 2 years old, 65% glyphosate soluble powder can be used, with 100 to 150 pounds per 667 square meters. When the weed height is 10 cm, evenly spray the seedlings between rows (to prevent liquid sprayed on seedling stems Leaf) can effectively control the growing weeds. In order to prevent the liquid from drifting to seedlings, micro-ultra-low volume sprayers are generally not used. Matters needing attention: 1) Use 20% paraquat water agent, must be carried out before the cutting buds germinate, and the sprouts are forbidden after germination. 2) Use 65% glyphosate soluble powder and 20% paraquat in the nursery. Do not use micro-ultra-low-volume spray to prevent phytotoxicity to the seedlings due to liquid drift. 3) 10.8% of high-efficient gaisengerg EC and 23.5% of guar EC can be mixed or used interchangeably to help control single and dicotyledonous weeds in grasslands.
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