Planting techniques of autumn potato

Autumn potatoes refer to the potatoes planted from early July to early August and harvested in winter (mid-late November). Its growth period is short, and the purpose of planting is to provide excellent seed potato for spring potato production. Therefore, the cultivation of autumn potato has relatively strict requirements on plots and seasons, and the more successful planting techniques are as follows:

1. Autumn potatoes are suitable for planting in low-heat river valleys, dam areas and semi-mountainous areas with rich natural resources such as light, heat and water at an altitude of 1600 to 2000 meters. The main suitable planting plots are as follows: the flue-cured tobacco field in the late stage of harvest and baking before the middle of August; the empty line after interplanting small spring potato after harvest; and the big spring potato plot before the end of July.

Second, the variety selection mainly selects the middle and early maturing varieties of Xiaochun potato production, such as Xuanshu 2, 3, Weilan 3, 2, 88P55~30, 85g epidemic, Mira, Hui2 and so on.

Third, planting season to grasp the best season planting is the key to increase production, and the best season for autumn potato planting is from July 15 to August 15.

(4) rational close planting and scientific fertilization to ensure that the per mu sowing is about 3300 ponds, the row spacing is 0.5m, and the pond spacing is 0.350.4 m. When sowing, 1000-1500 kg per mu of rotten farm manure and 40-50 kg of potato special fertilizer are applied to cover the loose soil, which is beneficial to the whole pond, the whole seedling and emergence.

Fifth, strengthen field management and mid-tillage management when sowing combined with digging ponds to remove weeds, autumn potato emergence in the rosette stage combined with mid-ploughing and weeding, timely cultivation of soil moisture.

6. timely harvest of autumn potatoes after growing to November, when fallen leaves and dead seedlings appear in low temperature freezing, they should be harvested in time after 10 days or so, strictly remove impurities during harvest, pick up diseased and rotten potatoes, and all the rest are reserved for spring potato production.

7. The autumn potato after storage and harvest should be stored in a ventilated and dry place with slightly scattered light to prevent the harm of tuber moth caused by fever and reduce the quality of seed potato.