Causes of yellow spots on cucumber leaves

According to your description, it should be cucumber downy mildew, commonly known as "running horse", the diameter of the diseased leaf lesions 0.2-0.5 cm, when the damp spots on the back produce gray brown moldy material, when severe leaves from the yellow dry. 90% triethylphosphonate (ethylaluminophosphate) wettable powder 400 to 500 times liquid, 38% causticus copper (30% oxaclophane; 8% pyraclostrobin) 800 times, 25 % Metalaxyl (Drupoviral) WP 800 times, Corvo fluorescein Fermilab 1200 times; 64% WP WP 600 times, 70% EDP Zn WP 500 times , 72% Ke Kang Ling (Ke Lu, Ke Frost Cyanide, Cream Urea Manganese Zinc) WP 800 times, 75% chlorothalonil WP 500 times, spray every 5 to 7 days, the above agents should be Alternate use to prevent drug resistance.

Plastic Film

Agricultural PO film is a high-tech coating product, and is an upgraded product of EVA film,Po film is widely used in Light Deprivation Greenhouse.PO film is a new type of agricultural film produced by external spraying drying,process with advanced olefin raw materials and other additives in Japan. It has outstanding comparative advantages with traditional PE film and EVA film on the market.It has outstanding comparative advantages with traditional PE film and EVA film on the market and is widely used in Strawberry Greenhouse.

Advantage:

1.Excellent transparency: low fog, high transparency high light transmittance, low scattering rate, so it will heat up quickly in the morning.
2.Super continuous fogging and dripping ability: using fogging and dripping agent coating and drying treatment, can inhibit the generation of fog, fogging and dripping period can be synchronized with the service life of agricultural film.
3.Strengthen heat preservation performance: adopt high-tech special organic heat preservation agent, effectively control heat loss, effectively prevent the sudden drop of night temperature caused by freezing damage to crops.
4.Long service life: the use of high-tech antioxidant and light stabilizer, greatly extend the service life of agricultural film.
5.Super tensile strength: raw materials have super tensile strength and tear strength.

Plastic Film,Po Film,Agriculture Greenhouse,Greenhouse Plastic Film

Qingzhou JuLong Agriculture Equipment Co.,Ltd , https://www.julonggrowtech.com

Posted on