Hetian Qiao Weed

Summarize the experience of weeding in paddies around the country, mainly from two aspects:
First, agricultural control. 1. In places where conditions permit, regular rotation of paddy and dry land can significantly reduce weeds; 2. Control water and suffocate weeds. In the early stage of lotus root cultivation, the depth of irrigation is 2-3 cm. When the lotus leaves are 2-3, the irrigation depth can be increased to 10-16 cm, and the depth of water can be maintained for 4-5 days, which will kill most weed seedlings. 3 For large-grained weeds that have grown on the surface of the water, they are stepped into the soil immediately after being manually removed. 4. At the same time, weeds are removed.
Second, chemical weeding. 1, in the weeds at the 3-4 leaf stage, drained to Putian Mingshui, with 12.5% ​​of the cover grass energy, or 35% of the fine steady kill 40 ml per mu, spray 50 kg sprayed, 3-4 days after spraying Weeds gradually died and died. 2. After 7-10 days of lotus root cultivation, when the water temperature is stable above 20°C, 25% of herbicide ether can be used for 500-750 ml per mu, or 50% of prometryn can be used for 40-50 g per mu, or 25% for weed control. Emulsion EC 500 ml per mu, plus 25% diuron wettable powder 50 grams per mu, respectively, watered 50 kg spray. 3, with 25% of herbicide ether EC 500 ml per mu plus 25% 50 grams per acre per acre to mix, then mix with granular soil of fine soil, spread to the field surface, keep 3-5 cm deep water Layers, visible results in about 5-7 days. 4, with 60% butachlor EC 75-100 ml per acre, or 12% caustic soda EC 125-150 ml per acre, sprayed in the shallow water layer before the weeds germination, grass killing effect is better.
When applying chemical weeding, we should pay attention to three points: First, it is not suitable for spraying on rainy days. Second, when the water temperature is lower than 20°C, no pesticide is applied. Third, it is not suitable for string irrigation between paddy fields after spraying to prevent phytotoxicity.

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