Breeding method
1. Seed-breeding Seeds are harvested in early September. After the pulp is softened, it is rinsed, the pulp is removed, and the seeds are removed. The seeds are treated by stratification. The seeds are first soaked for two days. After they are removed, they are moistened with twice the clean Xihe sand and mixed with clean water, and then put into water-permeable and air-permeable woven bags. Then, a pit of 0. The bag is laid flat in the pit, the pit area is slightly larger than the area of ​​the bag, the soil is buried well, and it is slightly higher than the ground is in the shape of a hill, preventing excessive water seepage. In the first spring of the second year, seeds were excavated 1 week before sowing. The temperature was increased in the sun, kept at 20-24°C, and the water was moisturized. Frequent inspections, such as the rapid opening of the seeds, were to be placed in a 0-2°C kiln. The temperature is controlled internally and sowing is done 1 week before the end of local night frost. Fine soil preparation before sowing, choose sandy loam with good permeability, apply enough organic fertilizer, 1000kg per 667m2, then make bed, bed height is 30cm, bed width is 1m, prickly pear seed grain weight is about 10g, is a small grain seed, can bed Sowing, but also broadcast, sowing rate of 4kg/667m2; bed before planting to moisturize, after sowing 2cm thick cover soil, compaction, 20d after the seedlings can be drawn together, after two years of cultivation can be planted.
2. Asexual reproduction
(1) Cutting propagation In early July, the sprouting seedlings were collected in the same year. After the morning water was collected, they were inserted into the water to moisturize and cut into cuttings in the room in time. Cuttings Select semi-lignified shoots, cut to about 15cm, with 2-3 buds, cut from the top to 1cm from the bud into a flat mouth, the bottom cut into a bevel, cut 1/3 of the leaves, with 200*10-6ABT3 The rooting powder was soaked in the lower part of the cutting and soaked at a depth of 4 cm for 1 hour. Interpolation adopts all-optical intermittent spraying. The insertion bed is a circular table with a diameter of 12m. The circumference is made of bricks. The height is 30cm. The substrate is laid in 3 layers. The bottom layer is 10cm thick pebbles, the middle layer is 5cm thick coarse sand, and the uppermost layer is 10-. 15cm thick river sand, river sand PH value of 6.5-7, and no pollution, permeability is good. The bed center rises above the bed for the placement of intermittent spray equipment. Inserting 600-700 strains per square meter, cutting the initial stage, the spray can not be stopped, the nozzle once every minute circulation, rooting later cuttings, there is a certain water absorption capacity, can make the spray longer intervals.
(2) Breeding of Rosa roxburghii With strong tillering ability, a large number of new sprouts sprout from the roots every year. Selective strains in the fall season, ramets after digging, ramets and shoots to maintain independent roots, 3-4 shoots in the ground, pruning the roots, cutting the main root into 45o bevels, pre-planting after overwintering, planting seedlings It is necessary to cover cold protection materials such as grass curtains and apply rat poisons around them to prevent rodents and plant them in the spring of the following spring.
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