First, the functional ingredients of herbicides and symptoms of phytotoxicity
Commonly used herbicides include Jingke Cao Xing (25 g/bag) and Benzidine (when the field is weeded and weeded once, 60 g/bag). The main components are acetochlor and bensulfuron. At present, most manufacturers use a package as a basic unit to arrange the dosage.
Causes of phytotoxicity: First, some fields are unevenly cultivated, and the water storage is deep and shallow; second, some water storage is too deep, and even the heart leaves are submerged; thirdly, some are sand foot fields (leaked fields); Fourth, the amount exceeds the standard. The phytotoxicity of rice is characterized by dark green leaves, narrowing of leaves, tight heart-shaped leaves (like rushes), reduced photosynthetic function, long-term inhibition of the whole plant, prolonged growth period, and reduced yield.
Second, the correct use of methods
According to the different characteristics of the field soil conditions, water source conditions, planting fields or throwing fields, the herbicides can be used reasonably to achieve the best weeding and long-grass effects. Specific attention should be paid to the following points:
(1) Tillage and planting Hetian strives to be leveled to prevent weeds from being found in shallow water, and the seedlings are injured in the depth of the water.
(2) Grasp the use of herbicides 5-7 days after planting, and the principle of water not submerging the heart leaves, the depth of the field is 3-4 cm for 4-5 days.
(3) In high temperature weather, the medicine should be used when the temperature is low in the morning and evening, and the medicine should not be used excessively.
(4) It is safer to mix the herbicide with fine sand or fine soil. It is recommended not to stir the fertilizer with fertilizer.
Commonly used herbicides include Jingke Cao Xing (25 g/bag) and Benzidine (when the field is weeded and weeded once, 60 g/bag). The main components are acetochlor and bensulfuron. At present, most manufacturers use a package as a basic unit to arrange the dosage.
Causes of phytotoxicity: First, some fields are unevenly cultivated, and the water storage is deep and shallow; second, some water storage is too deep, and even the heart leaves are submerged; thirdly, some are sand foot fields (leaked fields); Fourth, the amount exceeds the standard. The phytotoxicity of rice is characterized by dark green leaves, narrowing of leaves, tight heart-shaped leaves (like rushes), reduced photosynthetic function, long-term inhibition of the whole plant, prolonged growth period, and reduced yield.
Second, the correct use of methods
According to the different characteristics of the field soil conditions, water source conditions, planting fields or throwing fields, the herbicides can be used reasonably to achieve the best weeding and long-grass effects. Specific attention should be paid to the following points:
(1) Tillage and planting Hetian strives to be leveled to prevent weeds from being found in shallow water, and the seedlings are injured in the depth of the water.
(2) Grasp the use of herbicides 5-7 days after planting, and the principle of water not submerging the heart leaves, the depth of the field is 3-4 cm for 4-5 days.
(3) In high temperature weather, the medicine should be used when the temperature is low in the morning and evening, and the medicine should not be used excessively.
(4) It is safer to mix the herbicide with fine sand or fine soil. It is recommended not to stir the fertilizer with fertilizer.
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