Cabbage diseases mainly include black rot, soft rot, root rot, downy mildew, black spot and sclerotinia; the main pests are aphids, cabbage caterpillars, diamondback moth, Spodoptera litura, rapeseed, and armor.蛞è“, wild snails, etc., the control method refers to Chinese cabbage.
First, the main disease prevention and treatment.
1. Viral disease: 20% of porphyrin hydrochloride, copper (virus A) 500 times solution, 83 antagonistic agent 100 times solution, or 3% Ningnanmycin water agent (bacterial gram gram) 300 times can be used at the beginning of the disease. Liquid, or 1.5% phytopathogenic 1000 times liquid spray, such as adding 0.0046% brassene (yunda 120) 1500 times or high nitrogen imported foliar fertilizer effect, spraying 2 times in seedling stage, transplanting Spray again after 7-10 days.
2, soft rot, black rot, bacterial dark spots, leaf spot, angular spot disease and other bacterial diseases: 72% agricultural streptomycin or neomycin can be used 4000 times liquid, or 77% can kill 800 times solution, or 14% solution of copper 350 times solution, or 3% carbendazim (kecoconazole) 1000 times solution, or 12.5% ​​thousand bacteria 900-1200 times solution, or 50% must green 2500-4000 times The liquid is poured 1-2 times 5-7 days after transplanting, and the spray is controlled at the beginning of the disease.
3, downy mildew: choose 75% chlorothalonil 600 times solution, or 50% dimethomorph (anke) 2500 times solution, or 58% metalaxyl manganese zinc 500 times solution, or 64% frosty manganese zinc (antivirus 矾) 600 times liquid, or 72.2% Plex water 600 times solution, or 72% frost urea manganese zinc (Klu, Best) 700 times solution, or 80% Xin Wansheng 600-800 times solution, Or 50% must be 2500-3000 times liquid, or 10% amishida 1500 times solution, or 20% fluoromanganese zinc 800 times solution, spray once every 5-7 days, 2-3 times in succession.
4, dry heart disease: can carry out extra-calcium supplementation, spraying 0.2% calcium nitrate or calcium chloride, or gold calcium treasure, calcium Darling, etc. for 2-3 times.
Second, the main pest control
1. Plutella xylostella, Pieris rapae, and rapeseed meal: 500-1000 times solution of chlorfenapyr No. 3, or 3,000 times of avermectin (inhibition) + 2.5% kungfu or 2500 times of enemy killing, or 0.8% Avi·Indigo emulsifiable concentrate (Yifu) 1000-1500 times liquid, or 5% Ruijinte 2000 times liquid, or 20% rice 1500 times liquid spray control.
2, Spodoptera litura, Brassica californica: 10 days before harvesting can choose 0.5% emamectin (three orders) EC 1500 times solution or 10% to remove 1500 times solution, or 24% methyl hydrazide (Meiman) 300 times liquid, or 40% chlorpyrifos (Xinnongbao) 1000 times, or 52.5% security 1000 times liquid, or card dead 2,000 times liquid spray control.
3, Flea: can be used 800 times liquid, or 5% sharp Jin 2000 times liquid, or Rui Dan 1000 times liquid, or 98% Bataan 1000 times liquid spray, spray once every 5-7 days, continuous 2 -3 times.
4, aphids and whitefly: with 10% imidacloprid (thumbs, four seasons red, sputum) 3000 times solution, or 25% Aketai 1000 times solution, or 50% anti-Poly 2000 times solution spray control.
5, snails, wild snails: 1 night with 2% edible salt water spray; 2 sprinkle, stacking 6% tetraacetaldehyde (Midda), 5% Mehta particles, in addition to the squid and other poison baits, 0.5- per mu 0.75 kg for booby trapping.
for conceyance of petroleum, gas and conveyance of other fluid .
Standrd :GB/8163
ASTM a53, JIS G3452, JIS G3453, ASTM A106, DIN 1629.
Basic Info.
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seamless
Tube For Conceyance Of petroleum and Fliud
pipe for conceyance of fluid and gas
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