Lettuce virus disease prevention
1. Plant disease-free seeds with disease-resistant varieties. The toxicity of purple leaf lettuce seeds is lower than that of green leaf type. Seeding with new high-fat membrane before sowing, can keep warm, moisturize, and swell, improve seed germination rate, and make seedlings strong. Repel underground pests and isolate viral infections. It can also be mixed with a seed coating.
2. Suitable sowing, timely excavation of field weeds before and after sowing, and spraying of Bordeaux mixture and tree-protecting generals can inhibit the pathogenesis and transmission path of plant airborne viruses and enhance plant immunity and health index.
3. Found that the mites were prevented in time to reduce the transmission of poison. At the beginning of the disease, the spraying agent was combined with the new high-fat film 600 times solution, and it was used once every 10 days, and the prevention and treatment was continued for 3 to 4 times.
Drywall Screws are a heat-treated process suitable for power tool installation and are mainly used for joining and fastening between wood panels and between wood panels and thin steel sheets.
Wall nail is a class of nails, its name is directly translated from the English Drywall Screw, the most important feature in the appearance of the flared head shape, divided into a double line of fine teeth drywall screws and single line of coarse teeth drywall screws, the biggest difference between the two is that the former thread is double thread.
Sheetrock Screws,Collated Screws,Drywall Screw Bit,Screwing Into Drywall
Kunshan Zhonggu Precision Hardware Co., Ltd. , https://www.zgfastener.com