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In which regions is the prune tree suitable for cultivation? How should I choose a variety of prune tree?

Climatic conditionsThe average annual temperature is above 9. In the south of the border, using peaches for anvils, the extreme minimum temperature is above -22. Using apricots and anvils for cutting boards, the annual minimum temperature is not less than -28, and the absolute maximum temperature is 42-C. The frost-free period is more than 180 days. After the prune tree is formally consumed, the plate can block or cover the grass, serve as a moisturizer, alkali press, and can be interplanted between small wooden bases with small stick crops. Growing season irrigation after timely weeding and loosening.

Fruit harvested to give the base fertilizer, young trees to give the base fertilizer Rock / plant. 50 kg / plant successor. Base fertilizer is generally used ditch city, ditch depth 40 cm, width 30 cm. Along the external projection of the tree crown to open the ring fertilizer ditch, the fertilizer evenly into the ditch, fill in time. Alternatively, fertilizer is applied on both sides of the outer canopy (east-west or north-south), with east-west and north-south rotating every two years.

You can chase twice a year, respectively, before flowering (mid to late March) and the period of fruit expansion and the beginning of bud differentiation (mid-June). Young trees 100-200 grams per plant, 400 grams per fruiter, fertilizer N: P: K ratio of 233601: 2. Autumn rain through the pipeline projection, you can dig to the east and west, north and south of the different directions of the autumn rain 15em deep, 30em wide shallow ditch, fill in the soil in a timely manner after the application of fertilizer.

In order to prevent the late frost to make the firearm temperature drop below 3, ignite the grass pile or smoke agent, 5 piles / 667 square meters or more evenly distributed in the courtyard. Spray 500 times of aqueous solution of cycadin before flowering to delay flowering and prevent low-temperature damage from late frost. Improving fruit set and using orchard anti-logging can increase yield. Generally put 1 box of bees/667 meters. Pruning in the winter cut and summer cut two periods, to winter cut mainly. Usually in early February. Summer cutting will take place from May to July. Winter pruning is mainly to open up the interior, regulate the reasonable spacing of branches, remove back branches, dead branches, diseased and insect-infested branches, overcrowded branches, short and sturdy branches, shrink the weakened perennial fruit-bearing branches, spray the mediocre branches, and the uppermost competing branches are sturdy, and the branches are appropriately short and lengthened. Summer pruning is mainly used to pull the angle of the stock index with pillars, centering, twisting, lifting branches, ignoring long branches, de-budding methods.