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Rapeseed is very sensitive to 2A and 4C and a very small dose can cause injury to rape. In the production of rapeseed spray, sprayers sprayed with 2 A 4 chlorine but not cleaned can be used to cause varying degrees of damage to rape. When the phytotoxicity is relatively light, spraying 20 to 30 mg/L of gibberellic acid solution in time will relieve the phytotoxicity to a certain extent and promote the recovery of rapeseed.
In the field of rapeseed, we spray 2A and 4 chlorine according to the normal herbicide dosage (normal recommended dosage for controlling broad-leaved weeds in wheat and rice fields is 30-60g/mu for pure drugs, and the maximum is 80g. Normally 13% 2 recommended dosage of MCPA sodium mu agent is 250 to 500 ml, 56% of the recommended amount of acres 4 sodium chloride 2 a water soluble powder is 100 to 140 g), will cause fatal injury oilseed rape is difficult to rescue.
If the above plots are sprayed with the normal herbicide dose, the amount of spray is too large. Even if measures such as spraying gibberellic acid are adopted, some rape seedlings that are lightly affected will survive, and their growth and development will be seriously affected. Almost no yield is received. Therefore, it is not recommended to take rescue measures, and crops that have been sprayed are not to be planted with broad-leaved crops such as pakchoi, and soybeans, corn and rice seedlings can be sown normally in spring and summer.
Author:
Mr. Nassen
Phone/WhatsApp:
+8615305363298
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Author:
Mr. Nassen
Phone/WhatsApp:
+8615305363298
December 11, 2019
July 17, 2018
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Mr. Nassen
イーメール:
お問い合わせ 電話番号:86-536-2117708
Fax:86-536-2117708
携帯電話:+8615305363298
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住所:4899,Dongfeng Street, Weifang, Shandong
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