In recent years, due to the continuous expansion of the vegetable area, the accompanying diseases have gradually increased, especially the problem of the death of zucchini, which is a headache for many vegetable farmers. We have summarized some methods for reference. Glass Mosaic,Glass Tile,Glass Decoration,Crystal Mosaic Foshan Guanyu Group , http://www.guanyu-group.com
First, fertilization due to the application of too much chemical fertilizer, causing soil compaction, increased harmful bacteria, and the reduction of beneficial bacteria, making pests and diseases worse. Based on organic fertilizer and biological bacterial fertilizer, the use of bio-organic fertilizer 600-800 kg or decomposed chicken manure 5-8, chitin-type base fertilizer 200-300 kg, silicon-calcium fertilizer 50-100 kg, potassium sulfate 30 kg, Turn into the soil and then ridge to prepare for planting.
Second, the colonization chooses 5 to 7 days of good weather planting, after placing Miao Tuo into the pit, do not rush to bury the soil, the hole Shi Xiangnong No. 4, Chitin promotes root sterilization + methyl thiophanate + streptomycin mixed water Each seedling is filled with 3 to 5 two, and after 2 to 3 days, the root tip is exposed to the soil and covered with soil (remember not to bury all the soil, revealing the ground 1/3 to 1/4), then watering, etc. 10~ The film was coated after 15 days.
Third, after planting Huanmiao binding IRRIGATING 2 to 3 times with pesticides was obvious control effect. The drug has 800 times of the agricultural No. 4 or chitin-enhanced bactericidal treasure + arnanmycin + metalaxyl, and the roots of the above two drugs can be alternately irrigated.
Fourth, watering and fertilizing should be based on rooting before, using fertilizers containing amino acids or humic acid, if conditions can always use high-containing chitin fertilizer (such as Haili), because chitin can produce line Bacteria can inhibit the occurrence of Fusarium, Pythium, and Phytophthora, which can both inhibit the bacteria and regulate the soil. (Remember not to pour large water, be sure to pour water according to the actual situation, in order to prevent the humidity from increasing and causing infection of the bacteria)!
In addition, the blight of the wilt will also lead to the death of the zucchini, which is mainly caused by leaves and stalks, followed by melons.
The leaves are damaged, resulting in nearly round or irregular shaped lesions. Sometimes the lesions are "V" shaped or semi-circular lesions inward from the leaf margin. They are light brown to yellowish brown, and the lesions are easy to rupture. The plaque pattern is not obvious, and many small black spots are scattered on the lesion.
Stem damage, mostly occurs in the nodes or near the nodes, began to appear oily spots, oval or fusiform, slightly concave, grayish white to dark brown, secreting amber flow of glue. After drying, it is reddish-brown, the diseased part is shrinking and splitting, and a large number of small black spots are scattered on the surface. When it is serious, it can cause stem rot. The melon was killed and the melon was light brown.
Control method: pesticide control, in the early stage of the disease, spray 70% methyl thiophanate WP 500-600 times liquid, vine dry WP 8000 times 1000 times or 40% new star emulsifier 10000 times liquid, 4 to 5 days apart Spray once, even spray 3 to 4 times.