Chinese cabbage disease has new trends
At present, the cultivation of Chinese cabbage in our province has entered the peak period of sowing. According to the field growth in recent years, it has been found that the severe downy mildew, soft rot, and carbon sickness have changed in Chinese cabbage and turned into soft rot. Diseases, black rot, and black spot are mainly infringements. This reminds farmers to step up precautions. First, strengthen field management: 1, and time seedlings. The first time the seedlings are generally pulled at the cross; the second time they grow to 4 to 5 leaves, 8 leaves will be seedlings. Miao Dingmiao grasps the principle of “five to five staysâ€, that is, to stay small to stay large, to stay and stay positive, to stay pure, to stay good, to stay strong. 2, watering to work. After topdressing and seedlings are watered in time, the principle of pouring water under small water should be taken before the group planting. Watering in the rosette period is based on the principle of “see wet see dryâ€; water is poured about 7 to 10 days before filling. And then stop watering. Second, pest and disease prevention prescription: Viral disease: 30% of fluorophosphorus or 5% of cocaine or 5.9% of milamimycin was continued 2 or 3 times from 3 leaves. Soft rot, black rot, and bacterial black spot: Agricultural chain toxins or tetracycline can kill 2000. Downy mildew: 72% Kelu or 68.78% silver hair or 53% gold mine or 50% Qi Shuo. Black and white spot disease: 10% Shigao or 40% Fuxing or 70% thiophanate-methyl or Nongkang 120. Flea beetles, fly species, and fleas: 15% of gold or 3% of ivermectin or 30% of acephate. Plutella xylostella: 1.5% Chuankansu or 0.3% green crystal or 25% urine or 3% ivermectin. Locust: 10% gold land or 3% mobireng 70% immense and so on. Spodoptera exigua, Spodoptera litura, 5% U.S. or Wuda Oasis, Spodoptera exigua, Spodoptera litura virus. Snails: 6% Metris or 6% Clomazone. Special Note: 1. The symptoms of soft rot and black rot are similar, but soft rot has odor and attention is paid to the difference. 2. It is advisable to use pungent vegetables such as onions, garlic, onions, leeks, etc. in the top crop of Chinese cabbage. Organic Intermediates N-Hydroxy Succinimide,Pharmaceutical Intermediates 2 3-Dichloroaniline,Trifluoromethanesulfonic Anhydride,3-Chloroaniline Colorless Liquid ShanDong YingLang Chemical Co.,LTD , https://www.sdylhgtrade.com