How to grow autumn potatoes in stubble

Potatoes are generally planted in spring and harvested in spring, but less in autumn, and it is also more difficult. The key is to break the dormancy of seed potatoes. But planting potato in autumn can increase the multiple cropping index and increase the income. Generally planting summer vegetables, watermelons and other summer crops can be arranged to plant autumn potatoes. The planting techniques of autumn potato are introduced as follows:

First, sow seeds at the right time. It is appropriate for areas with an altitude of about 500 meters to sow seeds from August 10 to 15, areas above 500 meters above sea level can be sown in early August, and areas below 400 meters above sea level should be postponed to the end of August. The former crop of Solanaceae is taboo.

The second is to do a good job of seed potato disinfection and budding. First soak the seeds with 200 times formaldehyde solution for 2 hours to prevent bacterial wilt. The method of sprouting is that about 10 days before sowing, soak the seeds with 10ppm's "920" solution for 15 minutes to break the dormancy period of potatoes, and then feed the seeds with wet sand indoors and keep the sediment humidity. Sow seeds after germination.

The third is reasonable close planting. Because the growth period of autumn potato is about 20 days shorter than that of spring potato, the plant height is much lower than that of spring potato, and the yield per plant is low, so it is necessary to plant about 5000 plants per mu.

Fourth, fertilizing and weeding. The growing period of autumn sowing potato is only about 70 days, and fertilization should be based on base fertilizer, such as rare manure, pig and cattle pen fertilizer, plant ash and compound fertilizer, etc. After sowing, grass can be sealed with 1000 times spray per mu before seedling.