Method:
1, soil preparation and fertilization should be carried out before planting. Carry out hole planting in Pingyuan, and dig fixed planting holes at the row spacing of 1.5x2 meters, with the length, width and depth of 50cm respectively. To build a garden in a low mountain, a horizontal belt should be built according to the contour line, with a spacing of 1. 5-2m, bandwidth1-1.5m, planting holes shall be dug at the spacing of1.5m. ..
Before planting, compost100 ~150kg was applied to each hole, and 250g of calcium magnesium phosphate fertilizer was mixed with soil. When planting, the roots should be stretched, the soil should be firmly covered, and the planting water should be poured enough. After the seedlings survive, we should pay attention to timely intertillage weeding and fertilization, and water them in time to fight drought when it is dry.
2, plastic trimming. Keep the tree height at 1.5-2m, the crown width at 1.5m or so, and there are 5-8 main branches in the whole cluster, which are interlaced with bearing mother branches. At the initial stage of planting, let it grow, promote fruit and crown, then sparse the branches that are too dense, drooping and too long, and cultivate the fruiting mother branches through pruning in winter and summer to achieve the purpose of three-dimensional fruiting. ?
3. Pest control. Common diseases and insect pests of Rosa roxburghii include powdery mildew, aphid, thorn moth, debt-dodging moth, whitefly, moth eater and so on. Powdery mildew occurs in spring and autumn, so triadimefon should be sprayed in early June, and the control effect can reach 74%-88%. Aphids mainly harm new shoots, so spraying 80% dichlorvos 2000 times is suitable, and the control effect is good. In addition, it is also effective against leafhoppers, spiny moths, leaf curl moths and small ape leaf worms.
Extended data:
morphological character
Evergreen climbing shrubs, up to 5 meters high; Branchlets are stout, scattered with flat and curved prickles, hairless when young, and glandular hairs, which gradually fall off and decrease when old. Leaflets are leathery, usually 3 pieces, 5 pieces sparse, and the petiole is 5- 10 cm long; Leaflets are elliptic, obovate or lanceolate, 2-6 cm long and 1.2-3.5 cm wide.
The tip is sharp or blunt, with a sparse tail tapering and jagged edges. It's bright green and hairless above, and yellow-green below. There are glandular hairs along the middle rib when young, and gradually fall off and become hairless when old. Petiole and leaf axis have prickles and glandular hairs; Stipules are free or connate with petioles at the base, lanceolate, with fine teeth at the edge, glands at the tip of teeth, and caducous.
Flowers solitary in leaf axils, 5-7 cm in diameter; Pedicel length 1.8-2.5 cm, occasionally 3 cm long. Pedicel and calyx tube are densely covered with glandular hairs, which turn into acupuncture with fruit growth. Sepals are ovate-lanceolate, leaflike at the apex, pinnately lobed or entire at the margin, often with bristles and glandular hairs, and the inner surface is densely pilose, slightly shorter than petals; Petals are white, broadly obovate, and the apex is slightly concave; Stamens are numerous; Carpels are numerous, styles are free and hairy, much shorter than stamens.
Fruit pear-shaped, obovate, sparsely subglobose, purple-brown, densely setose outside, pedicel about 3 cm long, sepals persistent. The flowering period is April-June, and the fruiting period is July-165438+ 10.
Baidu encyclopedia-Rosa roxburghii