Botrytis cinerea is a disease that is very easy to occur on vegetables. Botrytis cinerea has always been one of the problems that plague farmers. The following points are simple control methods for rapeseed gray mold for your reference:
1. After harvesting, dispose of the sick body in time, concentrate burning or deep burial; deep turn in time to reduce the source of bacteria.
2. Strengthen management and enhance disease resistance.
3. The shed sprays 6.5% methyl sulphate • mildew or 5% spring lei • king copper dust, 1kg per 667 square meters.
4. Open field spraying pesticide bactericide 40% bis-octane phenyl sulfonate wettable powder 1000 times solution or 2.5% chlorhexidine suspension 1500 times solution, 25% propiconazole emulsifiable concentrate 3000 times solution, 50% Ethylene sclerotium dry suspension 800 times solution, 50% iprodione WP 1000 times solution, 40% pyrimethanil water 800 times solution, 55% pyrimethanil carbendazim WP 600 times solution. Depending on the condition, once every 7 to 10 days, continuous prevention and treatment 3 to 4 times.
More pesticide knowledge , please pay attention to China Pesticide Network
connecting sleeve seamless steel tube
| name | high quality hot rolled cold drawn steel square bar | |||
| material grade | q235,20cr,40cr | |||
| sizes range | 8mm-80mm | |||
| tolerance | 1-2% tolerance | |||
| length | 3m,5.8m or 6m | |||
| surface | black,bright | |||
| test |
squash test, extended test, water pressure test, crystal rot test, heat treatment, ndt |
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|
chemical composition |
chemical composition | q235 | 20# | 45# |
| c | 0.14~0.20% | 0.17~0.23 | 0.37~0.45 | |
| mn | 0.30~0.65 | 0.35~0.65 | 0.50~0.80 | |
| s | ≤0.050 | ≤0.035 | ≤0.035 | |
| p | ≤0.045 | ≤0.035 | ≤0.035 | |
| si | ≤0.30 | 0.17~0.37 | 0.17~0.37 | |
|
mechanical properties |
tensile strength | 380~400 | ≥410 | ≥580 |
| yield strength | 235 | ≥245 | ≥335 | |
| extension | 26% | ≥25 | ≥19 | |
name: cold rolled hexagonal steel
cold rolled hexagonal steel packing:packing for export standard,plastic film and wooden case packing,etc
cold rolled hexagonal steel payment:l/c at sight or 40% advanced payment
cold rolled hexagonal steel delivery time:25-40 days
cold rolled hexagonal steel inspection:can do sgs inspection or other pre-shipment inspection
application:
1) stainless steel fasteners, chains, kitchen and sanitary wares
2) electronic products parts, medical appliances, springs
3) decoration materials and outdoor publictiy billboard, electron products
4) tablewares, bolts, nuts, screen meshs, cumbustors etc
Seamless Steel Pipe For Steel Bar Connecting Sleeve
connecting sleeve seamless steel tube
Liaocheng Xinglong Seamless Tube Manufacturing Co., Ltd. , https://www.lcxlpipe.com