Due to the high temperature and rainfall of August in the autumn of August, the sowing of the potatoes in potato crops and the sowing of potatoes and dead cockroaches are serious. Therefore, sowing autumn potatoes should be sown with whole potatoes.
To use the whole potato planting, select potatoes that are harmless, disease-free, non-cracked, bright-skinned, and of moderate size. Due to the slower sowing of potato whole sowing and the sowing of potatoes, as well as the use of potatoes harvested in spring, the seed potatoes are still dormant during autumn sowing (except for some dormant periods such as Fengshoubai and Zhengshu 3). . Therefore, germination should be carried out before sowing. There are two methods of germination: one is the pharmacy germination. Treating with gibberellin and other agents can break the dormancy of the potato and ensure that the seedlings are strong. General species, 5 days before sowing, first soaked with 510-6 gibberellin solution for 5 minutes, and then remove and germinate buried in wet sand for 5 days, buds grow 1 to 2 cm to sow. The long-term dormant species are first soaked with 1010-6 gibberellin solution for 20-30 minutes, and then germinated by embedding in wet sand. The second is the sand bed germination. If the time is right, you can also use the sand bed to germinate about 25 days before sowing. The method is to soak the seed potatoes with clean well water first, then spread 5 cm thick wet sand on the ground, soak the soaked seed potatoes on them, cover the top and all around the seedlings with 5 to 6 cm thick wet sand, every 2 Spray water once a day, shoots about 2 cm in length can be sown. We must guard against excessive humidity in the sand.
After the potato germination treatment, special attention should also be paid to proper sowing. Sowing too early, hot and rainy, it is easy to eat potatoes, lack of seedlings; and too late, the lack of growth period, yield decreased. In addition, autumn potato should be sown on sunny days before 10 o'clock in the morning and after 3 o'clock in the afternoon.
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