After the drought, the proper rainfall is conducive to the direct sowing of Chinese cabbage or seedling transplanting, but it will also cause weed growth due to autumn rain. After the autumn rain, all kinds of weeds are very fierce. They not only compete with Chinese cabbage for living space, inhibit the growth and development of Chinese cabbage, but also consume soil nutrients. If the grass is not affected, it will affect the Chinese cabbage yield. Active Pharmaceutical Ingredient medicinal extract,Pure loofah powder,blackberry juice powder Fufeng Sinuote Biotechnology Co.,Ltd. , https://www.ffsinuoteplant.com
In order to prevent weeding in time, the weeds should be chemically weeded for the cabbage fields before and after sowing or transplanting, and the following points should be technically mastered.
First, choose herbicides before seeding after sowing. Before emergence, one can use 70ml of 72% metolachlor EC or 150ml of 25% aminegrass EC, 55% of butachlor EC 75-100ml, and of Napropamide EC 150-200ml. , 50% valerian emulsifiable concentrate 100 ~ 125 ml, 50% acetochlor EC 60 ml, 33% Pendimethalin EC 100 ml, respectively, against 50 kg of clear water sprayed on the Daetu earth surface, can prevent Drought, sedge , weeds and other weeds, control effectiveness of more than 90%. If the monocotyledonous and dicotyledonous weeds in the field are mixed and grown, 35% of herbicidal EC can be used 250 to 300 ml, plus 60% butachlor EC 70 to 80 ml, or 72% metolachlor plus 60 ml , against the water 50 kg sprayed on the soil surface, there is a good effect of both weeds. For many types of weeds and with high density, 0.7% kg of 10% glyphosate can be used per acre before sowing and 40 kg can be sprayed against fresh water. After 5 days, weeds are planted again.
Second, choose herbicides before planting. The Chinese cabbage used for transplanting seedlings was transplanted and before transplanting, it was possible to use 48% of chlorfenapyr emulsifiable concentrate (200ml) or 24% carbazole emulsifiable concentrate (50~80ml), 50% acetochlor (80ml to 100ml), 50% of Napropamide. Wettable powder 80 ~ 100 grams, 20% of Napropamide EC 150 ml, respectively, against the water 50 kg sprayed on the soil surface, have a good control of weeds. Before weeds are transplanted, Chinese cabbage can be used with 25% aminegrass EC 20ml, 48% Napropamide EC 150~200ml, 60% Butachlor EC 130~150ml, Pendimethalin EC. 100 ml, respectively, against the water 50 kilograms, sprayed on the soil surface between the rows of cabbage, have better control effect. For the weed seedlings of Daejeon after transplanting, it can be used with 10.8% of high-effective flufluorofluroximaron EC 50-60 ml or 15% fluazifop-mercury EC 50-60 ml, sprayed with 40 kg of clear water. Can also be used in combination with valerian and glybuteron EC, that is, 30 ml per gram of eucalyptus EC, plus 50% to 60 ml of 60% butachlor EC, and 50 kg against clear water. After the seedlings of transplanted Chinese cabbage are alive, 48% trifluralin EC 150-200 ml or 50% paracetamol WP 75-120 g can be used per acre, and the sprayed wet soil table can be sprayed with water of 75-100 kg per mu. Re-use the gingivae to deepen the soil surface 2~3 cm to prevent evaporation.
Third, pay attention to the quality of pesticide application. Different herbicides selected for different weeds are selected; liquid medicines are strictly formulated according to dose concentration; when the soil is moist, the pesticide is applied; the soil is dried after the first irrigation; the application should be re-sprayed in case of rain; the seedlings have been planted or transplanted; The Chinese cabbage should be selected for targeted spraying; the soil with high organic matter content should appropriately increase the dosage, and the sandy soil should appropriately reduce the dose.