Sheath blight is one of the major diseases in rice production. Jinggangmycin is a long-term main agent for the control of rice sheath blight, but the resistance of sheath blight has increased, and some rice areas may have strong resistance. Therefore, other effective agents can be considered. The China Pesticide Network Xiaobian introduces you to the following agents: Silicon Briquette,Silicon Slag Briquette,Silicon Carbide Briquette,Silicon Alloy Briquettes YINCHUAN BINHE ABRASIVES CO.,LTD. , http://www.nxbhzhang.com
Full spike (240 g / liter of thiofuramide suspension). The bactericidal mechanism is different from that of jinggangmycin and azole fungicides, mainly to inhibit the succinic acid dehydrogenase in the pathogenic fungal tricarboxylic acid cycle, resulting in the death of bacteria. The fungicide has a strong systemic action, has both preventive and therapeutic effects, has high control effect, and has a long-lasting effect period of about 30 days, which is good for rice safety. Generally, 20 days before heading or early onset of rice, 30 ml of water is sprayed per acre with 20 ml of full ear, and the dosage range is 15-22.5 ml.
Good Lectra (43% tebuconazole suspending agent). The agent can be quickly absorbed through the leaves and roots of the plant, and is transmitted and evenly distributed in the body, inhibiting the demethylation of sterols in the pathogen, and inhibiting the formation of the biofilm to exert a bactericidal effect. It has the functions of prevention, treatment and eradication, wide spectrum of bactericidal activity, high activity, low dosage, long duration of action, and can promote rice growth, prevent early premature aging, increase yield and improve grain quality. The control of rice sheath blight can be used once in the tillering period, and the dosage per acre is 12-15 ml. When dispensing the pharmaceutical solution, first inject a small amount of water into the sprayer, then add the amount of the agent, stir well, and finally add enough water (30-40 kg per acre) of water spray.
Fine grain (20% grain WP). The fungicide has a strong systemic property and can be quickly absorbed by the rice plant after application, and the rain does not affect the efficacy after 4 hours. The sterilization principle is that Wright has a therapeutic effect on the growth of rice sheath blight in the rice plant, and the effect time is as long as 15-20 days, which is obviously better than Jinggangmycin. A single application can achieve the purpose of controlling the occurrence of the disease for a long time. When using, use 1 packet (40g) per acre for 45kg of water in the initial stage of the disease, pay attention to avoid the high temperature period of noon, to ensure that the field water layer 3-7 cm. Stirring must be done during mixing, and the spray should be evenly balanced.
Lice grain spirit (30% lice pattern WP) of pesticides and antibiotics and other drug compound from both planthopper, and multi-functional anti pesticides sheath blight. In use, the effect of controlling rice sheath blight is about 84%, and the effect of controlling rice planthopper is over 90%. The use of scorpion spirit once can play the dual role of both treating and removing insects. Its usage is 1 pack (25g) per acre. First, adjust the mother liquor with a small amount of water, then add 40-50kg of water. If the field is waterless, the water consumption should be doubled and evenly sprayed in the middle and lower parts of the rice plant. The efficacy period of blight is as long as 25 days.
Shensinmycin (1% Shensinmycin Suspension), which is an antibiotic agent, can inhibit plant pathogenic bacteria and promote plant growth, has a wide spectrum of sterilization, and can effectively prevent and cure sheath blight, rice blast, rice false disease and the like. Diseases can also control a variety of fungal diseases and soil-borne diseases on vegetables and fruit trees. When used, in the early stage of sheath blight, use 1% Shenzinmycin suspension agent 60-80 ml per acre, 45 kg of water. The spray effect is good.
Jin Lux (250 g / liter of propiconazole EC). It is a triazole fungicide whose mechanism of action is to inhibit the activity of monooxygenase in the fungus, destroy the synthesis of ergosterol, and cause cell membrane damage and pathogen death. There are two types of domestic and imported products on the market. The domestically produced pure drug per acre is 6.25-7.5 ml, and the imported pure drug is 5-10 g per acre, which has a good control effect on rice sheath blight. In the initial stage of sheath blight, the dosage per acre is 25 ml, and 40 kg of water is sprayed; when the disease occurs heavier, the dosage per acre is 30 ml and 40 kg of water is sprayed, before and after rice heading, to prevent the rice heading and If the grout is firm, it should be avoided in one-time overdose. The interval between the two medications should be more than 7 days.
15% Jinggang. Propiconazole wettable powder. It is compounded by jinggangmycin A and propiconazole, which has good control effect on sheath blight and can overcome the problem of short-lived period of single-use retinomycin. The drug can be absorbed by the roots, stems and leaves of rice, and is transmitted upwards in the plant body, and has the characteristics of low dosage and good control effect. After years of field test results, 15% of Jinggang. Propiconazole wettable powder is 20-35 grams per mu, and the control effect against rice sheath blight is 81.4%-86%. Maintain a 3-6 cm water layer in the field.
Master the correct method of application. The pesticide network recommends that you spray drugs in time according to the occurrence of the disease to control the spread of the disease. Rice sheath blight often occurs in the middle and lower parts of the plant, while the rice is closed in the middle and late stages of the rice. Spray application should increase the amount of water. The water consumption per mu is not less than 50 kg. Try to drip the liquid to the base of the rice plant.