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How to prevent and control greenhouse potatoes from before sowing to the sowing period?

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1. Adjust the planting structure and carry out reasonable crop rotation. Avoid continuous cropping with cucurbits and solanaceous vegetables; instead, rotate for more than three years with cruciferous crops such as cabbage and Chinese cabbage, and liliaceous crops such as Welsh onion and garlic. 2. Select disease-resistant varieties. Such as Haijiao No. 2, Zhongjiao No. 4, Zhongjiao No. 5, Zhongjiao No. 6, Zhongjiao No. 7, Zhongjiao No. 8, Tianjiao No. 3, Tianjiao No. 4, Tianjiao No. 6, Zhijiao No. 1, Zhijiao No. 9, Fengjiao No. 1, Dujiao No. 1, Jinjiao No. 8, Zaozao No. 1, etc. 3. Disinfect the seedbed. You can use 50

1. Adjust the planting structure and carry out reasonable crop rotation. Avoid continuous cropping with cucurbits and solanaceous vegetables; instead, rotate for more than three years with cruciferous crops such as cabbage and Chinese cabbage, and liliaceous crops such as Welsh onion and garlic.

2. Select disease-resistant varieties. Such as Haijiao No. 2, Zhongjiao No. 4, Zhongjiao No. 5, Zhongjiao No. 6, Zhongjiao No. 7, Zhongjiao No. 8, Tianjiao No. 3, Tianjiao No. 4, Tianjiao No. 6, Zhijiao No. 1, Zhijiao No. 9, Fengjiao No. 1, Dujiao No. 1, Jinjiao No. 8, Zaozao No. 1, etc.

3. Disinfect the seedbed. You can broadcast 1.2 kg per sq m of poisoned soil made from 50% carbendazim at 1:100, or broadcast 10 g per sq m of 75% thiophanate-methyl mixed evenly with a small amount of soil, or use 1 g of Lüheng No. 1 per sq m diluted with water at 300 times and spray it evenly in the bed before or after sowing, or mix 1 g of Lüheng No. 1 with 15-20 kg of sieved fine soil to make poisoned soil, spread 1/3 of the poisoned soil in the seedbed, and cover the seed with the remaining 2/3 of the poisoned soil after sowing.

4. Seed dressing with chemicals. For every 1 kg of seed, dress with 1-1.5 g of Lüheng No. 1 and 3-4 g of 50% thiram wettable powder, or 8-10 g of Lüheng No. 3, then sow immediately after dressing.

5. Seed soaking with chemicals. Soak the seed for 30 minutes in 10% trisodium phosphate solution, or for 30 minutes in 100-fold formalin, or for 2 hours in 500-fold 50% carbendazim solution.

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