Opinions on cultivation of Hami Melon in Autumn

1. Field preparation: the selection of cantaloupe in autumn should be far away from greenhouse, melon and vegetable fields, and should be cleaned, fertilized deeply, ditched and ridged, etc. two。 Sowing seedlings at the right time: we should not only avoid high temperature, typhoon, rainstorm and other disastrous weather, but also pay attention to the temperature requirements in the later stage of cantaloupe growth and development. The suitable sowing date for raising seedlings is about August 10. 3. Raise young and strong seedlings: raise seedlings in a nutrition bowl, the seedling age is about 7-10 days, and the leaf age is 1 leaf and 1 heart stage. It is necessary to prevent tall seedlings and burning seedlings at high temperature. 4. Planting, pruning and fruit retention: the planting density is about 9000 plants / hm2; two vines are used for pruning; melon nodes are located at about 10 nodes, with 1 melon per vine and 2 melons per plant. 5. Suitable for fertilizer and water: the leaching solution of compound fertilizer about 300kg/ hm2 is used as base fertilizer. Five to six days after fruit setting, the first batch of melons were treated with compound fertilizer 150kg/ hm2 and expanded melon fertilizer with water and fertilizer. 6. Control greenhouse temperature: pay attention to ventilation and cooling before fruit setting, and emphasize heat preservation and temperature increase after fruit setting, especially in the middle and late September to prevent low temperature at night. 7. Pest control: give priority to prevention and comprehensive control. Measures such as high border cultivation and plastic film covering all the ground in the greenhouse were adopted to control the humidity in the greenhouse and reduce the occurrence of diseases. At the same time, we should be diligent in inspection, strengthen management, find diseases and pests, and timely select biological and high-efficiency, low-toxic and low-residue pesticides for prevention and control. Hami melon cultivated in spring should wait for the occurrence and control of diseases and insect pests in the process of growth and development. In the process of growth and development of Hami melon cultivated in autumn, attention should be paid to the control of diseases and insect pests such as vine blight, fungal leaf blight, bacterial angular spot, downy mildew, powdery mildew, aphids, whitefly, melon silk borer and so on. 7.1 Disease prevention and control of 7.1.1 vine blight: keep the stem base dry; strictly pruning, timely application of medicine to man-made wounds; careful examination, timely use of medicine at the beginning of the disease. Prevention and treatment: apply amiceda to the wound and the affected area. 7.1.2 fungal leaf blight: before or at the initial stage of the disease, spray with 70% mancozeb 500 × 1000 times; 50% carbendazim 800 × 800 times; 50% thiram 500 × 800 times. 7.1.3 Prevention and control measures of bacterial angular spot: at the initial stage of the disease, 75% agricultural streptomycin 4000 times solution and 77% agricultural streptomycin solution can be used to avoid high temperature spray, and agricultural streptomycin should be used to prevent drug damage when melon seedlings are tender. 7.1.4 measures for prevention and control of downy mildew: at the initial stage of the disease, 25% Amisi solution up to 1500 times, or 72% Kelu 750 times 800 times solution, or 72.2% Prike 800 times 1000 times solution can be sprayed alternately for 3 times. When the humidity in the shed is high, it can be fumigated with 20% 100% fumigant at night. 7.1.5 powdery mildew: at the initial stage of the disease, 25% Amisi up to 1500 times liquid; or 62.25% Xiansheng 600 times liquid; or 10% Shigao 1000 times 2000 times liquid and other medicament rotation control; it can also be fumigated with chlorothalonil fumigant. 7.1.6 virus disease: mainly for early prevention and control of aphids, using 200 times of 2% Shikeduke liquid at the initial stage of the disease, or 250 times of 5% Shiduqing, or spraying 20% of virus A300 times. 7.2pest control 7.2.1 aphids: use 1% avermectin 1000 times, spray with 10% aphid lice 500 times, or 20% Kangfudo 700 times 800 times, or spray with urine washing mixture, use: use 1 part of detergent and 1 part of urea, stir evenly with 100 parts of water, prepare a mixture and spray on stems and leaves. It is required to spray melon leaves evenly on both sides. 7.2.2 whitefly: when first discovered, spray 0.5% methylaminoavermectin benzoate (green card) 1500 × 2000 times, or 10% enpyrex (strong star) 1000 times, or 25% Acetyl 5000 × 6000 times, or 70% Emile 5000 times, or fumigate Chlorothalonil with dichlorvos at night. 7.2.3 melon silk borer: spray with 1500 times of 20% rice mite, or 5% Yitaibao 2000-3000 times, etc.