After years of heavy planting, greenhouse melons have become more serious, especially downy mildew, blight, powdery mildew and aphids. These pests and diseases are the top priority of melon prevention and treatment. Let's talk about the green prevention and control technology of melon pests and diseases.
First, ecological regulation
1. Rotation
Rotating with other vegetables.
2, clean the countryside
Remove weeds in the field and surrounding areas, deepen the land, destroy the wintering places of pests and diseases, and reduce the number of pests and diseases.
3, fine land preparation
1) Soil disinfection
Soil-borne diseases can be deeped 25cm in the summer high temperature season, 500kg chopped straw or wheat straw per 667 m2, 100kg cyanamide calcium, mixed, ridged, mulched, irrigated, lasting 20 day.
2) shed disinfection
Spray disinfection on sheds, floors, roofs, walls and agricultural implements with 50% carbendazim WP 500 times. Or closed shed, acreage with 10% Isoprocarb 30g, 45% chlorothalonil 65g for fumigation, eliminate the source of the shed, the source of insects.
4, fitness cultivation
1) Selection of resistant varieties
According to the occurrence of local pests and diseases, select resistant varieties according to local conditions. Such as oriental honey, flower buds, Ruihong and so on.
2) Seed disinfection
Soaking seeds in warm soup: Pour the seeds into warm water at 55 ° C, stir constantly, to normal temperature, dry and dry, and mix with 10 billion live spores/g Bacillus subtilis 100 times to prevent blight, blight, anthracnose and so on.
3) Grafting seedlings
Grafting can be used in areas with serious soil-borne diseases. Special pumpkin rootstock or gourd rootstock can be used to effectively control blight and improve disease resistance to anthracnose and disease.
4) Soil treatment
Before the planting, use >500 million / g Bacillus subtilis + jelly-like Bacillus sp. 10Kg to improve soil ecology and prevent soil-borne diseases.
5, immune temptation
After the seed is released, the 5% amino oligosaccharide 1000 times solution is sprayed every 10 days or so, and sprayed 2-3 times.
Second, biological control
1. Natural enemy control
1) Bemisia tabaci: Within a week of planting, the release of the Lily wasp. Generally, 2000-3000 heads are placed every 667m2 times; when more than 10 heads of adult whitefly are used, it can be controlled once by the agent, and the base is pressed down. After 7 days, the bees are placed once again, and the bees are placed 2-3 times.
2) Hummer: Release the small calyx at the beginning of the occurrence, the release amount is 300-600 heads/667 m2, and release once after 10 days, releasing a total of 2-3 times.
3) Red Spider: Use Chilean plantlets to release at 667m2 10000-15000 heads at the beginning of each occurrence, and release every 7-10 days until the end of production.
2. Biological pesticides
1) Pest control
Bemisia tabaci, aphid: 0.5% matrine 500 times liquid spray.
Red spider: Spray with 10% liuyangmycin emulsifiable concentrate or 49% soft soaping agent 50-100 times (volume ratio 1% to 2%).
Helicoverpa armigera and Pieris rapae: Spray 200 times of Bt (200 IU/mg) emulsion at the peak of egg hatching. Biological agents such as azadirachtin, aurora, nuclear polyhedrosis virus can also be selected for prevention and treatment.
2) Disease prevention
Downy mildew: 10% polymycin can be used 100-150 g/mu, or with Bacillus cereus.
Leaf spot disease: It can be sprayed with 10 billion/mL Bacillus polymyxa 300-500 times solution.
Botrytis cinerea: Spray with 150% to 200 times solution of 1% Wuyoshimycin.
Powdery mildew: It can be sprayed with 10% Ningnanmycin soluble powder 1200-1500 times solution or 8% pyrimidine nucleoside antibiotic wettable powder 500-750 times.
Third, scientific medication
1. Disease prevention
1) Powdery mildew: Spray with 25% azoxystrobin SC34g/667m2 or 10% difenoconazole 1000 times solution.
2) If you are sick, you can spray 72.2% of the mildew water-repellent 800 times solution or 10% of the difenoconazole water-dispersible granules 2000 times.
3) Blight: Spray 70% thiophanate-methyl WP 800 times solution, or 46% copper hydroxide, or 6.25% famoxadone + 62.5% mancozeb spray.
4) Downy mildew: 10% fluthiazolpyrone 12-20ml/mu, or 64% mancozeb + 8% chlorpyrifos 50-75 g/mu spray.
5) Spray with 25% azoxystrobin SC34g/667m2 or 10% difenoconazole 1000 times solution.
2, pest control
1) Bemisia tabaci: 12% ethyl spinosyn 2000 times solution, 10% chlorphenone or 25% cockroach emulsifiable concentrate 1000-1500 times solution, 2.5% bifenthrin EC 3000 times solution.
2) Aphids: Spray with 50% anti-Converse WP2500-3000 times solution.
3) Liriomyza sativae: spray with 20% chlortetracycline WP 30g/667m2 or 25% thiamethoxam WG 3g/667 m2.
4) Harmfulness: Spray with 73% gram of emulsifiable concentrate or 15% ketone emulsifiable concentrate 1500 times.
Therefore, the cultivation of melons in greenhouses should be avoided as much as possible. If it is necessary to continue planting, please take green control measures.
The ergonomic design of the penis head is very pointed which makes it very easy to insert if you are a beginner or are warming up.
The phenomenal suction cup is moderate enough to hold the dildo firm in place for a hands-free play even with a quite vigorous usage.
The dildo/penis is made from reliable material for safe usage, it is nice and flexible for the most perfect positioning to fully satisfy.
The balls of penis feel solid and realistic which is a great feature that really improves the experience to the next level.
Artificial Penis,Realistic Artificial Penis,Lifelike Artificial Penis,Silicone Artificial Penis
Dongguan Chenkuang Biological Technology Co., Ltd , https://www.cksexdoll.com