Common weeds in wheat fields can be divided into two categories: grass weeds represented by bluegrass, foxtail, wild oats, etc.; broad-leaved hybrids represented by Maijiagong, A. sylvestris, and Houttuynia cordata grass. However, the weeding time of these two types of weeds in the wheat fields is not the same, some are suitable for winter, and some are suitable for spring. Therefore, the wheat field is well weeded before winter, or weeding after spring, this problem cannot be generalized. 1. Weeding before winter. It can be carried out after sowing of wheat - about one month, and it is best to control it before and after the first ten days of November. Wheat at this time The leaves are in 4-5 pieces, and the weeds are generally only 2 leaves, which can effectively control grass weeds. 2. Weeding after spring. It is suitable for the selection of the machine at the end of February and the beginning of March. This is because the temperature has warmed up after the spring, and the wheat and weeds have recovered rapidly, and it is difficult to weed at too late. However, many people now choose to weed before winter. Compared with weeding after spring, there is a certain advantage in winter. Before winter, weeds have less occlusion than leaves, low drug resistance, and less medicinal water for chemical weeding. It is easy to eradicate at one time. Moreover, weeding the wheat field before winter, has no effect on the growth of wheat after spring. Wheat weeding points 1, to seize the key time of medication. After 40 days of sowing of normal sowing date, the herbicide is safe in the 3-6 leaf stage. At this time, the resistance of wheat is strong, which is a good period for weeding before winter. 2, to grasp the temperature and weather when using drugs. First, the low temperature is 2 ° C and the average temperature is 6 ° C. This is very important. 3. It is necessary to choose the correct herbicide according to the type of weed. 4. The second dilution must be carried out when preparing the herbicide. Wheat weeding precautions 1. Promote the rational mixing and alternate use of herbicides to delay the emergence and development of drug resistance. 2. It is strictly forbidden to use methyl disulfuron and its compound preparation on strong gluten wheat and high quality wheat, and it can not be mixed with 2.4-D to avoid phytotoxicity. 3. Avoid the mixture of clodinafop, oxazolin and hormonal herbicides. Disclaimer: Some articles on this website are transferred from the Internet. If legal rights of third parties are involved, please inform this website. phone White Cooking Wine,Huadiao Wine,Slightly Sweet Yellow Wine,Different Huadiao Wine SHAOXING BAITA BREW BEER CO., LTD. , https://www.baitawine.com
Wheat weeding before winter or weeding in spring
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