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Sheath blight of rice in the Red River in central state of occurrence and control

Prediction model; for the middle of the state laws of rice sheath blight disease of rice that, against the degree of inter-annual weather conditions, bacteria source, plant density is closely related to water management Wada, therefore, harmful levels of rice sheath blight control, in addition to reducing bacteria source, taken in favor of the development of rice growing and cultivation measures of negative disease, the timely prevention contact the Pharmacy is an important means of disease control. Therefore, according to several factors above harmful levels of timely and accurate forecasts and anti-contact appropriate guidance to a large area of timely, economic and effective implementation of prevention and cure is forecast Zhou main content. The research since 1987 prove: the degree of prevalence rate and harm the average daily temperature ≥ 22 ℃, rainy days and the early accumulation of bacteria closely related to the source. Accordingly, the forecast should consider the following factors 1, early disease in paddy rice booting stage, jointing stage disease in paddy rice, 2, as early as late booting stage to dough stage, rice jointing stage to dough stage average daily temperature ≥ 22 ℃ days, daily average temperature, rainfall, rainy days} 3, when the field density of the CD insert, resistant varieties, and field water management conditions. Booting stage when the disease as early as late burst rate of 20 words, the jointing stage disease in paddy rice reached 30%, the late weather forecast daily average temperature ≥ 22 ℃ or more, and there is a continuous rainfall during rainfall or when there is rapid and predictable prevalence rate of close planting should be based on the field level, field water management, the degree of species susceptible to forecasting, to determine the scope and frequency of Shi Zhou. As we carry out systematic investigation of only two years, it is difficult to make weather data with the prevalence rate forecasting model, will continue to be accumulated system data in order to achieve the forecast and management of rice sheath blight modeling. (B) the proper chemical control, and bucket of rescue: the exponential growth of the application of agent can effectively control the speed and the prevalence of late disease degree of harm. Thus, the first pesticide suitable arrangements in the early stages respectively of the booting stage j rice and rice suitable for the second spraying should be arranged in diseases of the beginning of the vertical expansion, control, increased severity, harm reduction. Therefore, the rice is broken I: I - heading,[link widoczny dla zalogowanych], spike late for the beginning - * full heading. Rice is the beginning of ear - break date. From the Control Efficacy of different application to see the number of applications, application and effect of the number of positively correlated; from the effects of disease control, anti-23, a, l,, and. . . . . . . . . . . A, / 2 - source of hand-bars within the Gui Gui within plants (cinnamomumcassiaPres1), Ceylon cinnamon (C.Ze-yianiearaB |) and Sai Kung in Guangxi (c.1onreirlNees) and the branch bark of dry skin. Produced in tropical and subtropical regions. Traditional Chinese medicine in China commonly used in traditional Chinese medicine in China are valuable in areas suitable for growth as much, spend a lot of foreign imports every year. According to the survey, I have grown within the state of estuaries Gui 18 years ago, total 1410 acres. Currently, the development and utilization of this resource has been included as a key research topic of scientific research departments. Based on the available information and data. Cultivation in Guangxi about Hekou calendar Nangbang species whip, now Tuan l study, the value of drugs and devices to the car to further study the issue for the departments and the reader testosterone poisoning. If Ao control rule indigo-benefit considerations, serious illness of two fields should be sprayed joy, light field disease early, middle and late rice are booting a breach period _ Rotary Blue drugs as well. '<C) of the busy movement of Taiwan, Chiang enzymes most patients in a large area on the bad foot to take technical measures for the comprehensive anti-http: ① the salvage sclerotia. Sclerotia recovered primary infection source is to reduce the fundamental measures, flood damage after the salvage floating rake Peng, reducing the amount of fields and unremitting Lei, @ rational fertilization, increasing P and K applied. Implementation of rice fertilization techniques, and booting stage in rice, respectively, filling spraying potassium dihydrogen phosphate, played Mu Tan Kin strains by strong seed grain, riding only premature aging, disease and so on; @ rational close planting, the possession of training the target specification. Cheng Guan watch for rice cultivation technology standardization, to adhere to the variety, soil fertility and fertilizer demand level, the Conference shall determine the appropriate specifications, Mak hybrid rice requirements; thin cut 30,000 acres Dian Cong, medium fertility 2. A 2. s million Cong, Cong appropriate fertilizer mother 2-2.2 million; conventional types of stern acres of sleep a corresponding increase in density of the CD insert to 50,000 bundles, 40 000 Cong and 3. Million Cong. Wide and narrow row and wide row planting narrow line article, ④ scientific management of water. Adhere to the shallow potential in the management of primary, enough to set meeting with fields, thousands of wet irrigation, filling prior to the wet-based, post-filling time control fields, ⑤ Jing drug control. Jing Jing Gang Drug Prevention to mold claims, supplemented by other agents, such as triadimefon. Carbendazim, D. r of other drugs, to rid rice ship s disease and other diseases prevention and treatment of a disease suitable for early and heavy plots, the early break in the booting and heading stage together, late in the booting and the beginning of ear - heading, rice booting and heading, respectively, in the beginning of a pesticide; general master block or break date are at booting a banner medicine. 24