Second degree safflower locust (Robinia pseudoacacia)
Robinia pseudoacacia is a rare landscaping tree species, which was introduced into Henan Province from the Netherlands in 1996. It can grow and develop normally in Henan. It is rare in that it blossoms twice a year, around May 1 for the first time and July 10 for the second time. The flowers are large and pink with a length of 3.7 cm and each flowering period is about 15 days. The young leaves are yellow and reddish in color, and the stem is reddish brown at the end of growth. The annual seedling is about 3 meters high and is an excellent street tree and garden greening tree species.
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Robinia pseudoacacia
Distribution of origin: in North America. Morphological features: shrubs, up to 2 meters high. Stems, branchlets and pedicels are all densely covered with red bristles. Stipules not becoming spiny. Pinnately compound leaves, leaflets 7-13, widely oval to suborbicular, 2-3.5 cm long, leaf tip obtuse, with a small tip. Pollen red or purplish red, 2-7 flowers in sparse racemes. Pods, with glandular spines. Growth habits: like light, cold resistance, like well-drained soil. Garden uses: safflower Robinia pseudoacacia flowers are beautiful in large color, in the shape of small trees, but
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Rapid breeding technique of Populus tomentosa
Pearl boxwood has bright green leaves and small and round leaves, which can be used as hedges and individual trees in landscaping. The technology of rapid propagation of softwood cuttings is introduced as follows. 1. Cutters should be located in greenhouses or greenhouses. After the ground is leveled and thoroughly disinfected, bricks are used to form a border-shaped slotting machine with a width of 100 cm and a length of 6 to 8 m (depending on the conditions) and a depth of 30 cm. Bed bottom cushion 12 to 15 cm thick cinder, gravel or coarse sand as seepage layer, 15 to 20 cm thick fine sand as cutting substrate. Spray water on the seedling bed before cutting to make the water-holding capacity reach four.
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