1. Trifluralin
Trifluralin is a selective absorption-conveying soil treatment agent. It is used as a preemergence seedling after sowing. It is used as 48% trifluralin 1500- 1875ml/hm2 (commercial quantity, the same below) water 600-750kg, evenly sprayed on the soil. table. Pay attention to accurately grasp the amount of medication, and strive to spray evenly. The site preparation must be fine. If the site preparation is not fine, the weed seed in the soil block will not be able to contact the chemicals, and even if the rain soil blocks are scattered, it will still produce grass. The trifluralin-induced photolysis is ineffective and the soil should be mixed immediately after the application of the drug. The drug should be mixed into the soil. Generally, the soil must be mixed within 8 hours after spraying. Trifluralin has a long residual period after being applied to the soil, so it is not suitable to plant sensitive crops such as sorghum and rice.
2. Shi Tianbu
Shi Tianbu is a selective internal absorption conductive soil treatment agent. After sowing, the seedlings before the seedlings are irrigated with 33% of Shitian's supplemented milk 150-200 ml, and evenly sprayed with 40-50 kg of water on the soil surface can effectively control the annual quail. Weeds and some broad-leaved weeds, such as yarrow, crabgrass, green foxtail, bluegrass, maidenhead, purslane, sorghum, alfalfa and so on. Application Notes: 1 In case of drought, 3 to 5 cm of soil should be mixed to enhance the control effect; 2 to avoid direct contact with seeds and medicines; 3 Shi Tianbu to control grass weeds than the effect of broad-leaved weeds in the Broad-leaved weeds can be considered mixed with other herbicides.
3. Cao Chu
Grass Chu is a selective pre-emergence soil treatment agent. Before sowing, weeds of the weeds are sown with 48% Cao Chu 150-200 ml, and watered with 40-50 kg evenly sprayed on the surface. It has better control effects on annual grass weeds such as madder, crabgrass, green foxtail, and bluegrass, and it also has good effects on broadleaf weeds such as Portulaca oleracea, Poria cocos, Castanopsis falciparum, and Poria cocos. Notes on pesticide application: 148% of grass and weeds are effective under wetting conditions in the soil, such as soil drought should be watered and then applied to improve the efficacy; 2 grass and weeds have no effect on the unearthed weeds and should be applied early. The unearthed weeds should be removed before use.
4. Goer
Guoer is a selective contact killing soil treatment herbicide with post-emergence stem and leaf treatment. After seeding, it is treated with pre-emergence seedlings. The 24% Goer EC can be sprayed with 600-750ml/hm2 of water and evenly sprayed on the soil surface to prevent the removal of alfalfa. , Thousand gold, goosegrass, setaria, hardgrass, aunt, awesomegrass, bluegrass, purslane, iron amaranth, alfalfa, alfalfa, laverna, intestine, alfalfa and other annual weeds, but The effect on weeds perennial is poor.
When using for the first time, small-scale tests should be conducted according to different climatic zones to find out the best application method and optimum dose suitable for local use, and then use it on a large area. Gore is a contact-killing herbicide, spray evenly and thoughtfully, do not damage the drug layer after spraying, and the dose should be accurate.
5. Saikin
Sagejin is a selective internal absorption conductive soil treatment agent. It is used after seeding before sowing. It can spray 70% Saikin WP 375-975g/hm2 to 600-750kg evenly on the soil surface, which can prevent various kinds of broadleaf leaves. Weeds and some grass weeds, such as oysters, oysters, purslane, bitter leeks, seaweed, cocklebur, valerian, and setaria. When using it, it should be noted that if there is a large amount of rainfall or flood irrigation after spraying, it is easy to produce phytotoxicity.
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