Wheat field weeds and wheat glory, water competition, competition for fertilizer, is the intermediate host of some pests and diseases, or one of the important factors restricting high yield of wheat. Seize the favorable opportunity to eliminate, save labor, save time, and achieve the purpose of increasing production and increasing efficiency. Yesterday, the plant protection experts in Xuchang City, Henan Province deliberately opened the “prescription†to guide farmers to carry out spring chemical weeding.
After the wheat is greened and before the jointing, it is a crucial period for the spring. After winter wheat sowing, the soil is good, which is conducive to the emergence and growth of weeds. However, due to unfavorable weather conditions, the area before winter removal is small. At present, the density of weeds in most wheat fields is relatively large, and individual plots are more than 200 plants per square meter. The grass species are mainly pig broth, lacquer, sown wormwood, mother-in-law, leeks, etc. and are mostly in the seedling stage.
With the recent temperature rise, the plant protection experts recommended that farmers choose the appropriate herbicides for weed species to carry out chemical weeding in time, or combine spring plowing to carry out artificial weeding. For the field of broadleaf weeds such as wormwood, leeks, and peas, we can use 5% diflufenacil suspension 10-15 ml or 10% fensulfuron WP 10-12 g per acre. 15% of Benzene·Benzene mixture is sprayed evenly on water 30-40 kg. For fields with broad-leaved weeds such as lacquer, 20% chlorofluoperoxyacetic acid (Ailong) emulsifiable concentrate can be added with 30% Benzyl Benzene Mixture 15g or 10% Benzsulfuron-methyl herbicide 10g per acre. Spray evenly on water 30-40 kg. Wild oats and other grasses with serious grass weeds can be used in 6.9% of fenvalerate (Humma) concentrated emulsion 50-60 ml or 15% acetylene oxalate (maiji) 16 g per acre, 30-to-water 30- 40 kg even spray. Single and dicotyledon weed mixed wheat field, 10-15 ml of diflufenacil suspension or 10 g of 10% bensulfuron-methyl herbicide per acre, plus 6.9% fenoxapropane (Puma) Concentrated emulsion 50-60 ml, spray evenly on water 30-40 kg.
Plant protection experts specially remind farmers friends that chemical weeding should be carried out in strict accordance with technical specifications to prevent phytotoxic accidents. It is necessary to choose a weather that is stable at 8 ° C above the average daily temperature and is sunny and windless from 10 am to 4 pm. Wheat according to the main LO variety selection agents, strict master dose administration, use of secondary dilution method, i.e. first TC stir diluted with a little water, and then add a little water dilution, shake well Spray. For wheat, pepper, wheat-smoke and other intercropping fields, herbicides with short duration and no effect on intercropping crops should be used. It is necessary to pay attention to the amount of application according to the requirements of the manual. Do not blindly increase the dosage. Spraying should be uniform, and do not re-spray or leak. Thoroughly rinse the drug before and after application, and rinse the rinse into the wastewater ditch.
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