Wheat Disease Prevention and Control Technology

Wheat Disease Prevention and Control Technology

Wheat diseases in China mainly include wheat rust (strip rust, stem rust and leaf rust), head blight, powdery mildew, full-bleeding, sheath blight, and snow mold blight. Among them, wheat stripe rust mainly occurs in the northwest, north China, Huaibei, southwest and other wheat areas; leaf rust occurs in the middle and lower reaches of the Yangtze River and in wheat fields such as Sichuan and Guizhou. In recent years, the development trend of wheat in the North China wheat area has been growing. Gibberella occurs in the Yangtze River Valley in Jiangsu, Zhejiang, Anhui, Hubei, and Sichuan, where riverside and riverside wheat regions occur in varying degrees every year, resulting in heavy losses; wheat powdery mildew used to occur only in the Yangtze River Basin or the Southwest Wheat Region. In recent years, it has become an important and frequently occurring disease in the Huang-Huai-Hai and Northwest wheat areas. In addition, wheat sheath blight has been increasing year by year in Huanghuai and Yangtze River and Huai River valleys, and has risen to become an important disease in China's current wheat production; Leaf blight, yellow dwarf, and bush dwarfism have also been re-emerged in some areas. The prevention and control of wheat diseases should take corresponding measures due to the type of disease and the time of occurrence.
First, agricultural prevention and control of agricultural control should grasp the following aspects: First, control low-lying land, repair drainage system, eliminate waterlogging, reduce groundwater level and field humidity, reduce the occurrence of stripe rust, powdery mildew, sheath blight, and reduce gibberellin Diseased environment. Second, improve the irrigation technology, change the water temperature and irrigation to furrow irrigation, timely flood control after winter irrigation, reduce spring irrigation, reduce the humidity in the field, and reduce the scaling of spring diseases. Third, increase organic fertilizer, pay attention to nitrogen, phosphorus and potassium fertilizers, and control nitrogen fertilizer. Fertilizers should be applied as far as possible at the time of sowing or combined with winter irrigation. Fourth, adjust the sowing date, such as the wheat summer rust disease in the summer and the incidence of autumn seedlings heavier areas should not be sown prematurely. Fifth, deal with bacteria source. For example, the primary infestation sources of head blight are all tainted crop stalks and stubble. Therefore, ploughing and other measures are used to bury the straw in the ground before winter to make it rot or remove it from the field. In summer wheat stripe rust and powdery mildew areas, summer cultivators must be timely cultivated to eradicate the field's own wheat seedlings and eradicate the self-producing wheat seedlings along the roadsides and roadsides to eradicate the source of summer rust in stripe rust and powdery mildew and reduce the incidence of autumn seedlings. To reduce the disease.
2. Wheat varieties with disease-resistant cultivars more resistant to wheat rust rusting: Mianyang 11, Mianyang 15, Xiaojing 6, Yuanmai 4, Xuzhou 21, Yumai 7, Fengkang 8, Fengkang No.13, Jinan No.13, Lumai No.1, Lumai No.3, Lumai No.5, Lumai No.7, etc.; The varieties of powdery mildew resistant are: "Feng Kang System", Zhengzhou 831, Yubao 15, Huapei 28 Wait. All localities can combine the actual production, choose to plant disease-resistant varieties, especially varieties that are resistant to multiple diseases, in order to achieve effective disease control of varieties.
Third, chemical control
1, drug seed dressing. In areas where wheat stripe rust and powdery mildew are present in areas where the disease occurs more severely in the over-summer area of ​​the summer and autumnal seedlings, or in the area of ​​wheat sheath blight, seed dressing 0.2% of triadimefon is used for autumn rust, The powdery mildew control effect is more than 90%, and it plays an important role in delaying the spring flood season, reducing the hazards, controlling the wider epidemic of the disease, and the treatment of sheath blight. In areas where the wheat yellow dwarf virus is endemic, seed dressing 0.211-0.31% of 3911 can be used to treat the damage of wheat bran during autumn seedling stage and reduce the transmission of yellow dwarf virus in order to control the endangerment of yellow dwarf virus. The purpose is to simultaneously treat underground pests and moles.
2, Datian spray control.
(1) During the period from turning green to jointing stage of wheat, when the general rate of stripe rust reaches 5-10% and the stem and diseased stem reaches 20%, 25% triadimefon 32g or 15% triadimefon 50g/mu for water is used per mu. 75 kg spray control.
(2) In the areas with severe occurrence of wheat sheath blight, 5% Jinggangmycin can be used 100-150 grams per mu, coarse spray of 100-150 kg of water, or low spray of 15-25 kg of water. 300-450 kilograms of water can be poured. The focus of prevention and control is the early sowing of susceptible varieties, continuous cropping of wheat fields, and excessive or insufficient use of nitrogen fertilizer. In a growing season, it is generally controlled 2 times. The first application is when the diseased plant rate reaches 20-30%, the second is used after 15 days, and 25% triadimefon is used for 25 g per mu and 50% carbendazim is 100 per mu. Grams, 25% carbendazim spray 200 kg per mu 40 kg of water.
(3) Prevention and control of wheat scab should be carried out from full heading to 5 days after flowering, with 80% carbendazim micropowder per acre 50 g or carbendazim micropowder, 40-50 g active ingredient of colloidal suspension, and 70 % Thiophanate 50-75g low spray (not less than 10kg per mu). The prevention and control of scab must be aimed at the characteristics of its infection period limited to the flowering period. The focus of chemical control is to prevent flowering. If the weather forecast is rainy and humid, it should be applied at the full heading stage. The number of sprays depends on the forecast and the degree of occurrence. However, the key is to apply the drug for the first time. If you miss the first dose, increase the dose later. The number of times is also difficult to achieve the desired effect.

Ningxia black wolfberry is named "Qiao Ni Ying Er Ma Ge" and Tibetan medicine named "Pang Ma", belonging to Lycium barbarum. For many thorny shrubs, many branches, hard branches, often curved, white. It is distributed in several provinces of Northwest China and Northwest China and Tibet and Europe. Black berry and Lycium barbarum are sweet and plain, rich in protein, Lycium barbarum polysaccharides, amino acids, vitamins, minerals, trace elements and other nutrients. It also contains rich black fruit pigment - natural procyanidin (red fruit Lycium barbarum), and its OPC content exceeds Blueberry (OPC3690mg/100g of black fruit Lycium barbarum and blueberry OPC330 to 3380mg/100g). So far, the natural wild plant with the highest OPC content has been found. Proanthocyanidin OPC is the most effective natural water-soluble free radical scavenger. Its efficacy is 20 times that of Vc and 50 times of VE. The black wolfberry is known as the "blue demon" in the wild.

NingXia Black Goji Berry

NingXia Black Goji Berry

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