The main technical points for sowing seeds for spring sowing crops in the second crop are:
Seeding: timely sowing is an important part of high yield. Timely refers to the most suitable planting when the soil reaches a temperature of 7-8 degrees at a depth of 10 cm. Covering the film can increase the ground temperature by 3-5 degrees, generally sowing 5-10 days ahead of schedule. The county usually planted on April 1st to 10th, and the latest can not exceed April 15. When planting, the plant grows from a large ridge, and the ridge distance is 90-100 cm. It is planted in double rows with a spacing of 30 cm and a covering thickness of 7-10 cm. Seeding methods can be artificial sowing, draught, mechanical sowing. With the large-scale production of potato and the intensive use of mechanical sowing, it is an inevitable trend to grow potatoes.
Film: The best film thickness is 0.08mm and width 90cm. After high-row ridge cultivation, timely repression and sculpting of ridges should be carried out to press into the fish's ridge, in order to facilitate the covering of the film. When the film is covered, it should be stretched and laid out so that the film can be tightly attached to the ridge to prevent wind blown film and both sides of the film on the ridge. In the case of compaction under the high ridge, the joints must be tightly sealed. Pre-membrane cultivation should pay attention to checking seedlings in a timely manner, and use fine wet soil to seal seedlings. It can breed windproof tympanic membranes and weeds, and it is also conducive to warming and keeping warm.
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