Rice field iron chive grass hourly medication
A reader from Lianyungang City came to the phone on May 31st: Last year at the 4-leaf stage of paddy rice, 200 grams/liter of fluopyroxine per acre, 15 mL of 15% 2ND sodium chloride soluble powder, 15 grams per acre, and Mercury were used. 10% pyrazosulfuron wettable powder 20 g water plus 15 kg spray to control the field of iron leeks, rice leaves slightly yellow after 2 to 3 days of medication, but after 10 to 15 days rice seedlings resumed growth. This year, 15 grams of 2% Na 4 sodium chloride powder per acre, 10 grams of Mercury 10% azosulfuron-methyl wettable powder, 10 grams of 480 grams per liter of anti-grass pine water, 100 ml of iron leeks are prepared. How is the effect? Circles: Fluroxypyr, 2A, 4C, pyrazosulfuron (combined with the effect of soil sealing treatment), Picea sinensis is a common stem and leaf treatment agent in paddy fields, and it has different degrees of control effect on iron amaranth. Grasp the early use of drugs in the grass when the leek grass, grass after the increase in drug resistance, control efficacy will decline. 200 g/L fluconoxyacetic acid is used in paddy field, generally 30-50 ml per mu. The drug should be avoided before and after rice nourishment is too small or before noon on sunny days. The concentration should not be too large. Otherwise it may cause phytotoxicity to rice and yellowing of leaves, etc. Generally, after a certain period of time, rice seedlings will resume growth. Indos 56% 2A 4 sodium chloride soluble powder is used in rice fields, generally 30-60 grams per acre. The drug is less contaminated, and the risk of using phytotoxicity on rice is relatively small. It is also safe before and after the application of rice at the 3-leaf stage, but the amount can not be large, and it should be applied at the recommended amount in a low amount. The combination of 2A 4C and fluoxac can increase the spectrum of herbicide killing. Half of the two drugs are often used in production to reduce the risk of phytotoxicity to rice. 10% pyrazosulfuron is used in rice fields, generally 10 to 15 grams per acre, with a maximum of 20 grams. The dosage of this medicine is too large. If the air temperature is higher than 30°C for more than 2 days after the medicine is used, it is prone to phytotoxicity, yellowing of rice leaves and inhibition of growth. Last year at the time of 4 leaf stage of rice application according to the above formula, it should have better control effect on low-age iron amaranth, but the use of chlorofluoropyroxyacetic acid and 2 a 4 chlorine is less, and the control effect is poor when the grass age is large. After spraying, rice leaves slightly yellow, which may be related to improper application. Herba pine is a contact-killing herbicide. It should be avoided before and after noon on sunny days to avoid phytotoxicity to rice. Uses 50% 2% Na 4 sodium chloride soluble powder per acre, 15 grams of Mercury, 10% Acetosulfuron-methyl wettable powder, 10 grams of 480 grams / L anti-grass pine water, 100 ml of water, and has a certain anti-iron amaranth effect. Pay attention to increase the amount of 2 A 4 chlorine, and use a sufficient amount of water, add more than 30 kg of water per acre to ensure control efficiency. Yu Wang issued a WeChat message on May 29: Will 10% ethyl flufenacil be used to prevent broad-leaved weeds in direct seeding rice fields? What kind of medicine is effective to control the iron leeks in the direct rice field? Circle: Ethoxyfluazone is a contact-killing stem and leaf treatment agent, which is mainly used in the control of broad-leaved weeds in soybeans, peanuts, and wheat fields, and can also be used to control broad-leaved weeds in paddy fields. The drug is less safe to use on rice. Improper application of pesticides may cause contact spots on rice leaves. Note that the dose and concentration of the drug should not be too large. Avoid spraying before and after midday on a sunny day. When the seedlings are small and weak, Do not apply drugs, otherwise you may die if a phytotoxicity occurs. Prevention of drought-removal of cast iron grasses in japonica rice fields, can use butachlor, butyl bupropion, pendimethalin and other drugs before seeding, plus bensulfuron-methyl and pyrazosulfuron for soil sealing . In the growing stage of japonica rice, we can control the weeds in the two leaf and one leaf stage of indica rice and combine the control of other weeds. We choose different types of herbicides such as cefotaxime, fluoxyl, flufenoxapol, and ethyl flufenazone. Prevent this weeds; or combine control of weeds and other weeds in the 2-leaf 1 heart stage of rice, and use penoxsulam and other drugs, and then use the cefotaxime, fluoxyl, The drug sprays such as flucarbazone and ethyl flufenacil are removed. After the four-leaf stage of rice, 2-methyl-4-chlorophenol can be used. The drug resistance of iron amaranth increases with increasing grass age. When the grass age is large, the control effect of herbicides such as spruce will decrease significantly. It should be applied when the grass age is small. In addition, iron amaranth is a drought weed, not wet, the field as soon as possible to establish a water layer is conducive to inhibit the occurrence and growth of this weed; after the application of the field to establish the water layer in time, will help improve the weeding effect. China Extract Powder For Use As Dietary Supplement Extract Powder, Extract Powder Manufacturer Shaanxi Kang New Pharmaceutical co., Ltd. , https://www.bodybuildingoil.com