There are many kinds of cucurbitaceae vegetables. The vegetables that people often say such as cucumber, zucchini, pumpkin, wax gourd, bitter gourd, and gourd gourd are common vegetable varieties of cucurbitaceae. The temperature in autumn is high to low, the temperature is high and it is rainy in the early stage, and the drought is often encountered in the middle stage. After the melons enter the stage of melon growth, the environmental conditions for growth and development are getting worse as the temperature drops and the light weakens, and the pest control work is done well. Especially critical. This period should pay attention to the prevention and control of pesticides on the basis of agricultural control to ensure the harvest of vegetables. Downy mildew The harm symptoms are mainly harmful to the leaves of the melon vegetables, and the diseased plant leaves have irregular polygonal lesions. In the early stages of the disease, the lesions were immersed in water. After 2 to 3 days, the lesions became light yellow on the front surface and the black mold layer on the back of the lesion. The lesions were contiguous at the later stage and the leaves were dry. Usually only 1 week from the onset of disease to pull, rapid onset, rapid infection, often causing devastating losses. Prevention and control methods from the selection, nursery should pay attention to prevention, cultivation period should strengthen management, downy mildew occurs, with the use of high-efficiency, low-toxicity agents for prevention and control in order to completely control the occurrence and damage of downy mildew. There are 72.2% effective pharmaceutical preparations 600 to 800 times, 72% Kelu WP 600 times, 64% WP WP 600 times, and 70% BP AlMn Zn wettable powder 600~800 Times of liquid, etc., spray once every 7 to 10 days, and even spray 2 or 3 times. Viral disease Symptoms Virus diseases include mosaic type, wrinkled type, yellow type, and green spot type. After the plants were damaged, the whole plant was dwarfed, and the dark green and light green of the leaves and fruits were on the other hand. The melons were small or spirally twisted. The melons were mottled, uneven and had bad flavor. Leaf shrinkage, discoloration, mosaic, mottled, yellow and other deformities, new vines slender, twisted, short internodes, poor flower development, fruit setting difficulties. Prevention and control methods Virus diseases mainly rely on locusts, field operations and sap contact, lack of water, lack of fertilizer, extensive management, aphids and disease incidence. The disease should be mainly prevention, and can use 7.5% Keduling agent 600 times solution, 20% virus Ning 500 times solution, 2% Ningnanmycin agent 500 times solution, 83 agent increasing agent 100 times, 6.5% bacteriostatic water solution 800 times, etc. were sprayed once after planting, early fruit stage and full fruit stage, and the drug was stopped 5 days before harvest. powdery mildew Hazardous symptoms Powdery mildew can occur from seedlings to adult plants, mainly damaging the leaves and sometimes also harming stems and petioles. At the time of initial onset, small white spots appeared under the leaves and then gradually enlarged. Finally, they could be connected together and covered with white powdery mildew. In severe cases, the leaves gradually turn yellow and dry, and sometimes many black spots appear on the lesions. Before the onset of the control method, spray 1:2:40-fold Bordeaux mixture and spray every 10-15 days to protect the leaves. If the disease has already occurred, use 25% triadimefon 2000 times liquid, or 75% thiophanate-methyl wettable powder 800 times, or 50% carbendazim wettable powder 500 times, or agricultural anti-120 water 200 Alternating liquid and other spray, spray once every 5 to 7 days, and even spray 3 to 4 times. Blight Most of the hazard symptoms occurred after flowering. The first part of the damaged plants showed wilting ptosis at noon on some leaves or plants. It seemed to be dehydrated and could be recovered sooner or later. Afterwards, the wilting leaves increased gradually and gradually spread throughout the whole plant. Sooner or later, they could not recover. , and soon died. In the diseased plant, the basal part of the vine spreads longitudinally, and the stalks of the longitudinal cuts show vascular bundles turning brown. There are yellow-brown streaks between the base of the stem, knots and nodes, and often yellow gels flow out. On the surface of the diseased part, white to pink moldy layers appear on the surface of the diseased part. Diseased plants are easy to pull up. In the early stage of disease prevention and treatment, 50% carbendazim WP 500 times, or 70% thiophanate-methyl WP 400 times, or NR 120A 100 times, 0.25 kg per strain , irrigation once every 5 to 7 days, even irrigation 2 to 3 times. Must master the medication at the beginning of the disease, otherwise the effect is poor. Bacterial keratopathy The harm symptoms mainly damage the leaves, petioles, tendrils and fruits, and can be damaged from the seedling stage to the adult stage. The cotyledon of the seedling stage became infected and began to produce sub-circular water-soaked depression spots, which turned brown and dried. In the adult stage, water-soaked spots with the size of the needles on the newly emerged needles, the expansion of the lesions is limited by the veins being polygonal, and when the humidity is high, milky white mucus is produced on the lesions on the back of the leaves and forms a white film or white powder after drying. Late lesions are brittle and easy to perforate. The lesions on the stems, petioles, and young melons were water-soaked, nearly round to elliptical, and pale gray on the back. The lesions often cracked. When the melons were moist, the diseased parts overflowed with bacilli, and the lesions spread inside the melons. , It has been extended to the seeds, causing seed bacteria. The diseased melon later decayed and smelled, and the young melons often rot and fall off after being killed. Control methods can be used at the beginning of the disease can be used neophytin 5000 times, 30% copper carboxylate wettable powder 500 times, 53.8% can be killed suspension 600 times, 60% saponin aluminum phosphorus wettable powder 500 times Liquid, 47% Garnett WP 800 times, 70% Amethyst Copper WP 600 times, etc. alternately, spray every 7 to 10 days, and even spray 3 to 4 times. It should be noted that excessive application of copper preparations can cause phytotoxicity, which is generally not more than 3 times. When spraying carefully, the front and back of the blade should be sprayed to improve the control effect. Alcohol Corn Gluten Feed,Custom Corn Gluten Feeds,Corn Gluten Feed To Chickens,Nutritional Corn Gluten Feed JILIN COFCO BIO-CHEM AND BIO-ENERGY MARKETING CO., LTD , https://www.cofco-biotech.com