(1) In the field where the watermelon wilt disease has occurred, it is best to plant the watermelon at intervals of more than 3 years. Found that the diseased plant was immediately unplugged and burned, and 20% of the fresh lime milk was poured into the diseased planting hole. The perfusion solution was 500 ml per hole.
(2) The selection of watermelon varieties that can resist cultivars can also be used as a rootstock for grafting watermelon seedlings to strengthen the cultivation and management. The guadi must select the sandy land with high topography, good drainage, and fertile land. Pay attention to drainage after the rain to prevent water accumulation. The best watering ditch; using fine water infiltration, do not flood irrigation. Apply enough base fertilizer, pay attention to the application of nitrogen, phosphorus, and potassium fertilizers to prevent partial application of nitrogen fertilizer. In particular, control the amount of nitrogen fertilizer during the squashing period to prevent the vine leaves from becoming long and induce wilt disease.
(3) Mix 1 part of 80% pure carbendazim wettability agent with 200 parts of fine dry soil, combine with fertilization and apply to ditch and cave, then sow or plant watermelon. In the early stage of the wilt disease, 80% carbendazim can be used to irrigate the roots 1000 times, or 30% of the Hymexin 500mg/kg can be rooted. In the field with slightly severe onset, 40% fluorosiliconazole 8000 times solution and 80% carbendazim powder 600 times solution can be used to irrigate the roots, and 250-300m1 of liquid solution per plant is applied, once every 10-15 days. Or use 4% pyrimidine nuclear antibiotic agent 300-400 times solution, or 3% methotrexate WP 800 times solution, or 54.5% sclerotinol WP 250 times foliar spray.
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