The name of the rich tree: Robinia pseucdoacacia is a genus of leguminous genus. It is an excellent tree species for ornamental, greenery, soil conservation, and sand fixation. In order to cultivate large-scale, afforestation seedlings, the seedlings grown and propagated are field-shifted after defoliation or before sprouting in the spring. plant. 1. Row spacing: Plant spacing more than 60 cm, row spacing more than 70 cm, planting about 1000 per acre. 2, transplanting digging points: the required length and width of 40 cm, large size seedlings should be appropriately increased digging hole size. Fertilize at the bottom of the hole (with farmyard manure or moderate amount of compound fertilizer), and then separate the soil. The soil layer is 15 to 20 cm thick. Put the seedlings in the soil and compaction again to make the root system in close contact with the soil. Pour enough root water. After the water sinks, fill with soil and compact it. Afterwards watering will be carried out according to the situation, keeping the soil moist. When the annual seedlings are transplanted in the field, they are flattened, in order to make the new branch of the root neck more robust and grow faster. 3. Management of transplanted seedlings: In the spring of the year following transplant, the sprouts of the lateral buds should be germinated immediately in order to protect the main trunk from rapid growth. When the main trunk is 180 cm high, the lateral branches are left. When the main trunk grows to 250 cm, the stems are picked and dried to meet the requirements of afforestation. Note: This type of greening use large seedlings, the crown should not be overweight when lifting, should retain young shoots with leaf buds, but can not cut off the fixed value, because such large seedlings in the transplant bed after several de-emergence, there is no intersegment Leaf buds or latent buds, generally do not germinate and branch after cutting and planting, and trunks die. Yunnan has introduced a three-year-old seedling transport distance of 4,000 kilometers, in order to facilitate long-distance transportation, crown trimming is too heavy, resulting in decreased survival rate of colonization, the majority of reasons for the majority of long-term no buds can be extracted leaves, and gradually withered.
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