Celery field chemical weeding method
Weeding in celery fields is a time-consuming and labor-intensive farm work. It is often caused by grass shortages due to untimely weeding. The cultivation of celery in the open field can account for more than 40% of the whole cultivation and management process. It is especially necessary to weed the seedlings. It is necessary to apply chemical weeding. 1. Weeding in celery seedling fields Celery fields are susceptible to weeds such as sedge, gray ash, purslane, crabgrass, and wild leeks, especially in celery and nursery fields that are cultivated in open fields. The seedling celery has strong resistance and adapts to a variety of herbicides. However, when the seedlings are unearthed and the young stems are not erect, they are also susceptible to phytotoxicity. It can be used for herbicide removal such as trifluralin, pendimethalin (Shi Tianbu), oxaloquinone (cacao Ling), and flupirtine (high-efficiency grass cover). First, use 48% trifluralin emulsifiable concentrate 100-150 ml per mu to 40-50 kg of water, spray evenly on the surface of the soil before or after sowing of celery, then shallowly mix the soil, safely geral emergence, weeding The effect is good. Note: If the celery seedling is covered with straw or shade net, it should be used before using the curtain or shade net. Secondly, use 33% Shitian emulsifiable concentrate 100-150 ml per mu to 40-50 kg of water, and spray evenly on the surface of the soil before celery sowing. Note: Sandy soil should be used at low doses and before the curtain or cover. Second, transplanting field weeding The following weeding measures can be used before or after transplanting: 1. Use 48% of Fluramine Emulsifiable Oil 100-150ml per acre to spray the soil with 50kg of water, mix the medicine with the soil with nails and transplant the celery. 2. Before transplanting, use 33% of weeding emulsifiable concentrate per 100-150 ml of water and 50 kg of water to spray the surface of the soil. After planting, gently rub the soil. 3. Use 48% of lezolamine emulsifiable concentrate per acre and apply 60 ml of water to the soil surface after transplanting. Third, matters needing attention 1. Reasonable choice of herbicides. Herbicide selectivity is very strong, no matter which herbicide is used before the application must be clear name, content, adaptation crops, contraindications, weeding categories, application concentration and methods. 2. The correct use of herbicides. The application of the herbicide should be smooth and the soil should be finely divided and moist. The use of herbicides generally works best before the weeds grow out, and the amount of herbicides to be removed is appropriately increased. 3. To choose sunny, windless, and high temperature weather, the droplets should be fine and the spray should be even. 4. When the mulching film is used in the field, the herbicide is more effective, and the dosage is relatively reduced. Generally, the dosage is reduced by about 20% compared with the open field. 5. The herbicide used in each herbicide spray must be cleaned and washed with alkaline water for 2 to 3 times, then rinsed with water to avoid phytotoxicity caused by residual liquid. If necessary, the herbicide sprayed with the herbicide is best used exclusively. 6. After the herbicide is sprayed on the celery, if the phytotoxicity occurs, the medicinal insecticide can be sprayed with 800 times of the active liquid fertilizer to relieve the phytotoxicity. Fourth, post-drug management When using in sandy soil, water should not accumulate after spraying. It is necessary to pay special attention to the fact that the growth process of celery is slow in the early and middle stages of growth, and it takes a long time to grow weeds in the field. At this time, in the process of weeding, combined with fertilization, the effect will be better. After planting, before mulching, cultivating 3 to 4 times, the combination of cultivating and cultivating soil is conducive to the growth of celery. Disclaimer: Some articles on this website are transferred from the Internet. If legal rights of third parties are involved, please inform this website. phone radiopaque adhesive tape,Radiopaque Tape,Medical Tape Anesthesia Medical Co., Ltd. , https://www.medicaldiverse.com