Spring wheat weeding is very important, and the spring season is not only the season of weeding, but also the season of weeds. The wheat weeding work in the spring is of great significance to ensure a good harvest. Today, I will share with you the spring wheat weeding time and precautions.
Spring wheat weeding time:
Weeds in the wheat field have two peaks of grass growth. The first unearthed peak was planted in wheat for 10-30 days, with grass weeds and piglets, leeks, hustle and bustle, and mother-in-law. The second unearthed peak was after the spring temperature rose in the following year. Early sowing, autumn rain is heavy, the temperature is high, and weeds are unearthed in the wheat field before winter. Late buckwheat is less unearthed before winter and more unearthed in winter than in winter. Therefore, the best period for weeding in wheat fields is before winter after sowing. However, this year's rain season was relatively large, and it was generally broadcast late. Later, many places were affected by factors such as drought and early cooling. Many people did not have time to do weeding before winter. Therefore, weeding in the spring is especially important.
Spring wheat weeding medication notes:
(1) The spraying time must be controlled before the wheat is returned to the jointing stage, and the daily average temperature is stable at 10 degrees or more. After the jointing of the wheat, chemical herbicides should not be used to prevent the occurrence of phytotoxicity.
(2) Pay attention to the weather changes before applying the medicine. It is not advisable to use the medicine when there is a strong temperature drop within 2-4 days before application.
(3) Strictly control the dosage of the drug, and it is not allowed to increase or decrease at will. For some new herbicide varieties, it must not be used blindly.
(4) Evenly and thoughtfully when spraying, do not leak or re-spray.
(5) Select the correct type of herbicide according to the type of weed in the field.
Spring wheat weeding time and precautions
Herbicide selection reference:
Dicotyledonous weeds: wheat fields mainly based on sage, amaranth, etc., may be selected from the group consisting of diflufenacil, sodium methicillin, 2,4-diisooctyl ester, etc.; , chlorofluoperoxyacetic acid, fluorochloropyridyl ester, diflufenacil, difluoro-oxazolamide, etc.; for broad-leaved weed mixed wheat fields such as swine fever, leeks, and sage, it is recommended to use compound Formulations, such as fluorochloropyridinium + diflufenacil, or diflufenacil + flufenoxyacetic acid, or diflufenazone + oxadiazon, can expand the herbicidal spectrum and improve the control effect.
Monocotyledon weed: wheat field dominated by buckwheat, acesulfame + special auxiliaries, or flucarbazone, methyl disulfuron + special auxiliaries, etc. It can be controlled with clodinafop-propargyl or oxazol-grass; the wheat field with main wheat can be controlled by methyl disulfuron + special additives; The wheat field can be controlled with clodinafop-propargyl or thiazol-grass.
Wheat field in which dicotyledonous and monocotyledonous weeds are mixed: The above-mentioned agents can be mixed to carry out stem and leaf spray control, or a compound preparation containing the above ingredients can be selected.
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