Ridge Covering High-yield Cultivation Techniques of Jinhong Apple in Cold Region

Film mulching can increase soil temperature , improve crop, vegetable and fruit yield and maintain soii moisture, so as so achieve early planting and early maturity and extend harvesting period, thereby promoting early cropping and high yield of crops. In response to the above restrictions of the fruit trees themselves and external conditions, in the spėng of 2013, a cultivation test was conducted with Jinhong apple trees by means of ridge covering. 2 Materials and methods 2.1 Overview of test site The test site (129°5ľ E, 44°42' N) is located in the Fruit Tree Expeémental Park of Heilongjiang Academy of Agėcultural Sciences. The data was collated with Excel 2007 software and analyzed by SPSS software. 3Results and analysis 3.1 Effect on vegetative growth Considering phonological periods, no significant diferences were found in germination, flowering, maturity and leaf falling between the treatment and control groups. The results showed that compare with the control group, the available nitrogen, available phosphorus , available potassium and organic matter contents of soil 20 and 40 cm from the group were im proved to different extents in the treatment groups.