Analysis on the key points of high-yield cultivation of sweet potato seedlings and false planting

1. Nursery: Choose dry land with good light and fertilizer for seedbed, plastic greenhouse should be in the middle and late February, small arch shed should be raised in mid-March. The oblique method is 15 kg/m2, and the field cultivation requires 50 kg of seed for every 667 square meters. Pour sufficient water, the bed temperature is maintained at 30 ~ 35 ° C, more than 35 ° C to uncover the film and cool down, in case of low temperature weather, sealing film insulation. After the Miao Qi, look at the seedlings and keep the bed moist. The seedlings are started 5 to 7 days before the seedlings are cut, and the night cover film is exposed. The film is completely exposed 2 to 3 days before the seedlings are cut, and the old potato seedlings are refined. Linyi Fertilizer Network Copyright

Linyi Fertilizer Network Copyright

2, fake planting: before transplanting the field, choose disease-free field, when the seedling height reaches 0.3 meters, you can cut the seedlings, cut the mouth to 2 to 3 cm away from the bed soil, and timely press 3 cm × 3 cm Plant, cultivate strong seedlings. Linyi Fertilizer Network Copyright

Linyi Fertilizer Network Copyright

3, mechanical ridge: sweet potato ridge planting, ridge height 20 ~ 25 cm, ridge distance 75 ~ 90 cm, sand soil using 25 horsepower, sticky soil using 35 horsepower four-wheel tractor. The ridger can use the 1KQ-30 sweet potato ridger. Linyi Fertilizer Network Copyright

Linyi Fertilizer Network Copyright

4, potato seedling transplanting: potato seedling transplanting using oblique insertion method, single row planting, seedling distance 25 ~ 30 cm. Spring potato 3000 ~ 3600 plants / 667 square meters; summer potato 3600 ~ 4000 plants / 667 square meters; autumn potato 4000 ~ 5000 plants / 667 square meters. Linyi Fertilizer Network Copyright

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