There are fewer herbicides that are suitable for controlling broad-leaved weeds in the vegetable field. According to Dong Jiaxing and others from the Zouping County Agriculture Bureau in Shandong Province, the effect of chlorfluazuron was effective in controlling broadleaf weeds in amaranth fields. Control the growth of the weeds before they thrive during the 4-leaf stage, and use 24% milkfloxacin EC 4000-4500 times for grass ages, 2500-3000 times for large grass ages, the liquid concentration cannot be too large, otherwise The top of the leeks will die. Tests have shown that 24% milkfloxacin EC can effectively control 85% to 98% of broadleaf weeds such as purslane at an appropriate concentration, and the fresh weight control effect can reach 95% or more, which can effectively control the broadleaf leaves of amaranth field. The occurrence and harm of weeds are particularly significant for the control of purslane.
Milk chlorfluazuron herbicide in the leek field should be "four with four without." The leeks grow robustly and do not grow weakly; adult plants are used during the seedling period; freshly harvested leeks need not be used, and the wounds are healed before use; they are not used before June and are used after June. The reason is that the leeks with weak growth have serious phytotoxicity and are prone to serious leukoplakia and withered (with no new leaves grown 15 days after the roots are damaged); the resistance of leeks to the seedling stage is poor, and it is easy to produce phytotoxicity; the wound is not healed after harvesting The phytotoxicity will affect the normal growth of leeks; before June, it will be used for medication. Due to continuous harvesting in winter and spring, the leeks have excessive nutrient consumption, poor drug resistance, and are seriously affected by drugs. After entering July, the leeks have passed several months. Continuous growth (no longer harvested after unveiling in mid-April), the plant's resistance to herbicides increased.
According to another information, octanoic bromoxynil can also control broad-leaved weeds in the field, but improper use may cause contact-type drug spots. Before using herbs to control broad-leaved weeds in the vegetable field, small area tests should be conducted to ensure safety.
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