Study On Planting Techniques Of Early Maturing Potato For High-Efficient In Suburb Of Harbin

The geographic condition and the climate are suitable for planting early mature potato growth in suburb of Harbin . According to the planting structural readjustment in suburb area, the area of early mature mulch with film potato is going to be increasing. By investigating planting situation of early mature potato and testing main technology in Suburb of Harbin , the main technology sectors of the high production cultivation of the early mature Potato in Suburb of Harbin was concluded:Using suitable variety and virus free potato seed. At present, the most popular early mature potato varieties used in Suburb of Harbin are Zaodabai and Youjin. The test shows that the higher grade of virus free potato seed used, the better of potato quality. So it is recommended to use second generation Zaodabai and first generation Youjin in Harbin Suburb.Using mulch with film. Mulch with film gives the guarantees of seedling emergence and fast growth in early stage. Mulch with film can increase the ground temperature in early growth stage of early mature potato. The ground temperature raises 26.4% and 37.3% in depth 5cm and 10cm respectively per day from Apr. 10 to Apr. 30; and raises 8.1% and 16.2% in May.Planting ahead of schedule. In Apr. 10, the climate is good; it is time for much with film planting. Up to July 10, potato could be sold in market, the highest benefit could be achieved, and the next autumn vegetables could be planted earlier.Other measure, according to the suburb farmer to produce experience, adopt to urge bud and transplant,Reasonable close planting,watering in time,adding farmyard manure is the warrant of the high quality and high yield...