Cucumber is a vegetable that we often eat in our daily life. In the cultivation of cucumber, it is inevitable that we will encounter some pests and diseases. This article will introduce in detail the prevention and control techniques of the three major pests and diseases that often occur during cucumber planting.
1, bacterial angular spot disease
It occurs mostly in the hot and rainy season, and the bacteria overwinter in seeds and soil. Pathogens are invaded by wounds and water holes. High temperature and rain, low ground and stagnant water, continuous cropping for many years, improper management of fertilizer and water, will increase. Rapid development after the storm, causing serious losses. The disease should be based on prevention, prevention and treatment methods:
(1) Seed disinfection: soaking with 72% agricultural streptomycin soluble powder 3000-4000 times for 2 hours, or 40% formalin 150 times for 90 minutes, washing with water and then soaking seeds for germination according to routine operation;
(2) Chemical control: 30% oxy-copper chloride suspension can be used, or 77% can kill 1500 times of wettable powder, 2% can be added 400-500 times of liquid, 72% of agricultural use Streptomycin soluble powder 4000 times solution, 42% trichloroisocyanuric acid 800 times liquid, neomycin oxytetracycline 4000 times solution, agricultural anti-120, 200 times liquid spray, alternate use, every 7-10 days, continuous 2 -3 times.
2, gray mold
(1) Ecological control: watering should be carried out in the morning, and watering should be properly controlled in the early stage of the disease to prevent excessive excess;
(2) timely removal of diseased fruit, diseased leaves, concentrated burning or deep burial after onset;
(3) Pharmacy prevention and smelting: spraying 25% of the enemy's de-emulsion 3000-4000 times liquid, 30% love emulsified milk 3000-4000 times liquid, 10% Baoli'an WP 900-1000 times liquid, 50% Suo Ke Ling WP 2000 times solution, 25% Amishida emulsifiable concentrate 1000 times solution, or 45% Tec lot suspension agent 3000-4000 times solution, 50% chlorhexidine WP 1500 times solution, 40% more · Sulfur suspension 600 times solution, 2% Wuyinmycin 150 times liquid, alternate use, every 7-10 days, 2-3 times in a row.
3, powdery mildew
In the early stage of the disease, there is a sparse white mold layer on the leaf surface, and the leaf surface mold layer gradually thickens to form a dense white round spot. When the disease is heavy, it infects the stems and stems, and the leaves are yellow and necrotic in the late stage of the disease.
The powdery mildew pathogens overwinter in the soil with the closed capsule and the diseased body, and can also overwinter on the greenhouse vegetables. Propagating by air, rain and watering, the environment of warm, humid, rainy weather and dense planting is prone to epidemics, flooding with large water, high humidity, insufficient fertility, and severe debilitation in the late stage of plant growth.
The prevention and treatment methods are appropriate to increase the application of biological bacterial fertilizer, phosphorus and potassium fertilizer, strengthen field management, reduce humidity, and enhance ventilation and light transmission. Chemical control can take 25% Amishida suspension 1500 times solution, 75% Dakoning wettable powder 600 times solution, 10% Shigao water dispersible granules 2500-3000 times solution, 32.5% difenoconazole Ester suspension 1500 times solution, 80% Dasheng wettable powder 600 times solution, 43% bacteria
Soap Dispenser,Chrome Soap Dish Holder,Paper Holder Tissue Holder,Chrome Dish Rack Bathroom
Kaiping City Kaipu Sanitary Ware Co.,Ltd. , https://www.china-kpo.com