How to prevent and control watermelon pests and diseases in greenhouse? Compared with the exposed watermelon, greenhouse watermelon can not only be listed more than one month earlier, but also can extend the harvest period for about five months. The yield is high and the benefits are good, but there are also certain shortcomings, such as harvesting first. After the batch of watermelons, greenhouse watermelons continue to grow vigorously. At the same time, pests and diseases are also greatly derived and spread, which has certain difficulty in prevention and control. The technology of rural rich nets is based on the actual production, and a set of greenhouse pest control technologies are provided. For your reference: Garden Sofa,Outdoor Garden Sofa,Garden Couch,Small Outdoor Sofa Foshan Shunde Zhili Furniture Company , https://www.zhilioutdoor.com
First, sowing seedling period (from early December to mid-January)
1 Prevention and treatment of rickets, blight, blight, blight, blight, root knot nematode disease.
2 control agents and methods of pesticide dressing. A benzoic WP can be used.
Seedbed soil disinfection. Soil medicinal soil cover can be treated with Luheng No.1, methyl bromide or chlorinated fumigant, plus 50% phoxim 1000 times solution or 55% chlorocyanide chlorpyrifos 1200 times solution. Seeds can be covered with 30% of the seedlings (Duofu) 10g and 15-20kg of fine soil.
Prevention and control at the seedling stage. 72% chlorfenapyr hydrochloride (propoxazole) or 60% mancozeb wettable powder 700 times solution, 60% azole ether • Desensen (Baitai) 1200 times solution, 50% dimethomorph (Shiyan or Anke) 3000 times solution, 30% nail cream • carbendazim 1000 times solution, 25% kairun emulsifiable concentrate 100 times solution, 75% chlorothalonil or 70% thiophanate or 25% amexida The suspension is sprayed 800 times, etc., once every 10 days, and the medicine is rotated.
Watermelon pests and diseases 2. Seedlings grow to fruit expansion period (late January to late April)
1 The main target of prevention and control is to control anthracnose, blight, blight, and cure blight, gray mold, sclerotinia, etc.
2 Control methods Before transplanting or transplanting, use 50% carbendazim 500 times solution + micro-replenishment root solution 1500 times solution to fill or root water, 200ml per plant, to promote early new roots And prevention of blight and so on.
After transplanting, from mid-February to late April, there is more rainy and cold weather, the greenhouse is closed for a long time, and the humidity in the shed is quite large, which is conducive to the occurrence and spread of anthracnose, blight, blight, gray mold, sclerotinia, For the prevention and control of pests and diseases, mixed drugs are used. 10% Shigao, 60% Baitai, Dasheng (80% mancozeb), 25% Amesida, 25% Kairun or 75% Dakonin can be used, and more than 50% can be added. Spray the mixture of fungicide or 70% methyl thiophanate, spray once every 10 to 20 days, and rotate the medicine.
Use pesticides such as imidacloprid or pymetrozine when picking aphids.
When the wilt disease occurs more heavily, use B. licheniformis water, agricultural anti-120, 10% double-effect water agent or 15% cure astringent water 200 times solution, 50% carbendazim 500 times solution, Luheng No.1 77% can be killed or 70% dikesone 800-1000 times liquid irrigation, alternating medication, interval 7 to 10 days, once every 2 to 3 times, the amount of perfusion of 0.25 ~ 0.5kg per plant.
Third, watermelon results, maturity, harvest period (from early May to early July)
1 In the middle and middle of May, in order to promote the growth of watermelon, the greenhouse is often warmed up, and the humidity in the greenhouse is large, which is beneficial to various diseases such as blight, anthracnose, bacterial angular leaf spot and sclerotinia; June Later, lepidopteran pests such as Spodoptera litura and aphids are equivalent to the cross-ptera pests at the same time or cross;
2 control methods to control leaf spot disease, anthracnose, black spot disease, rust, blight and other fungal diseases. Use 10% Shiga 1000-2000 times liquid, Dasheng (80% mancozeb) or 64% anti-virus 矾 600-800 times liquid, 60% Baitai or 25% Amesida 800-1000 times liquid, 25% Kay Run 1500 ~ 2500 times liquid or 75% Dakoning 600 ~ 1000 times liquid; treat lepidopteran pests with chlorantraniliprole, flubendiamide, cyanamide or a vitamin salt; treat both sucking mouthparts pests Imidacloprid, pyridoxine or nitenpyram is added.
Prevention and treatment of bacterial diseases by adding streptomycin, or leaf azole, or thiabium copper, or geranol; intermittently adding antiviral pesticides (30% morpholinium hydrochloride fertilizer, or 20% èƒâ€¢ Copper acetate wettable powder, or 31% azide/morpholinium soluble powder, etc.); intermittently add carbendazim or methyl thiophanate and other pesticides to prevent spray, every 10 to 20 days, rotate Medication.
Pick up red spiders. Spray 8% avermectin 1500 times solution, 24% snail ester (endangered) 5000 times solution or 20% hydrazine 2000 times solution.
Watermelon pests and diseases IV, watermelon results later (mid-July to early October)
1 After the mid-July, the insects of the genus Hymenoptera, such as Gualiang Hummer, continue to be harmful. They are the first pests in the greenhouse. They must be controlled throughout the whole process. Once they are out of control, they often cause dead vines, severely reduce production, or even fail. In addition, Spodoptera litura, aphids, anthracnose, and cure powdery mildew, black spot disease, viral disease, leaf spot disease, melon and so on, picking red spiders, whitefly and so on.
2 control methods for prevention and treatment of melons and horses and other pests and diseases: the first choice for the prevention and treatment of 60% ethyl spinosyn suspension, the second choice of 25% spinosad suspension, etc.; and other sucking mouthparts pests added imidacloprid, pyridine Insecticides such as insects, pymetrozine or nitenpyram; and the addition of insecticides such as chlorantraniliprole, flubendiamide, cyanamide or carbaryl to lepidopteran pests; 60% Baitai, Dasheng (80% mancozeb), 25% Amesida, 25% Kairun, 75% Dakonin or 64% antivirus cockroach, etc.; treat bacterial diseases into agricultural streptomycin, leaf dry Oxazole, thiabium copper or chrysanthemum, etc.; intervening antiviral agents (30% morpholinium hydrochloride drug mixture, 20% bismuth acetate copper or 31% azide morpholinium soluble powder) Etc.), take a mixed solution spray control, spray once every 10 to 15 days.
Pick up red spider and whitefly; use 8% avermectin 1500 times solution, 24% snail ester (endangered) 5000 times solution or 20% hydrazine 2000 times solution, add 25% imidacloprid 2000 times solution, 10 Spray 5% chlorothiazide 1500 times solution, 10% chlorpyrifosamine 1000 times solution or 48% thiacloprid 3000 times mixture, and spray 2 to 3 times.
The main pest control techniques in watermelons in greenhouses are differentiated from the various growth stages of watermelons, because most of the diseases and insect pests of watermelons in different growth stages are different, so that different prevention and control can receive good control effects, ensuring that greenhouse watermelons continue to produce high yields.