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European elm seedling planting technology in Yichun area


Side has eyelashes. Samara wide and oval, a l6-mm 12 mm long,[link widoczny dla zalogowanych], marginal eyelashes, or slightly below the middle stone. Fruit mature in late May. When Atriplex from green to yellow-white. Atriplex start with a few fly, it is necessary and timely harvest. Seed should be selected in the absence of wind, weather, Atriplex knocked first, and then collected. Atriplex Germination easily lost, pick the seeds should be sown immediately, if the broadcast had not, to spread out to dry, sealed dry storage. According to the net degree of seed germination% × l0o% = i; Juan × -00 European elm seeds, respectively, calculate the net was 75%, indoor germination rate was 77.5%, grain weight 8.1g. Third, the choice of nursery education in the flat, fertile soil, water, sunny sandy loam, PH value 7.5 ~ 7.9%. To flat bed, high bed better. Bed base fertilizer to build facilities, while for soil disinfection facilities built after the second manure bed. (A) nursery sowing method, seed waste, uneven emergence, prone to poor growth, easy to disease and other phenomena, is difficult in the management, it is generally not this method. (B) of the drill seeding, usually in late May each year, from 20 cm section, sowing rate of 5 cm, 0.2 cm for a 0.5 cm cover soil, seeding rate per square meter 7.5g ~ l1.28g, irrigation before sowing foot of water. L5 days after sowing seedlings can be a homogeneous, height 5 cm when the seedlings once asked. Dingmiao 15 cm or so per square meter Liumiao 3O a 45, height 30 cm,[link widoczny dla zalogowanych], the seedlings can be cut off the lower part of the collateral to promote seedling dry stout. Golden elm seedlings susceptible to insect damage, can be used 200-300 times 25% of the DDT spraying control. (C) Cutting Propagation: l_ softwood and hardwood cutting rooting rate comparison. European elm branches collected from May to June, with a rooting powder processing,[link widoczny dla zalogowanych], light spray in the whole state, for cutting. The field observation and comparison, shoots better than hardwood effect. Softwood cutting generally used, the second year of transplant beds colonization. 2. Article mining on Softwood cuttings in different rooting. European elm is not easy to root species, collected articles on the different effects on rooting are also different, if we can find the best article on mining, will help improve the survival rate cutting by the experimental observation. In late June is the best mining section of the European elm. 3. Processing time on rooting on rooting liquid from different processing time, European elm significant difference in rooting rate, when the rooting powder concentration of 500ppm, in the immersion time, the rooting rate performance, the optimal soaking time of 15 minutes should be the European elm seedlings 1 year up to 30 cm high seedlings to 45 cm, diameter 0.2 cm to 0.3 cm, only suitable for spring planting. Seedlings are freezing in winter, cover the seedlings with soil, cover thickness of 3 cm to 5 cm, the second year from late April early May, remove cover. Fourth, afforestation European elm native to Europe, from China (Xiaoxing'anling Forest Botanical Garden) introduction of planting, growing well after years of introduction and domestication, has completely meet the climatic conditions in the region and has normal flowering and fruiting. Plantation deep in the soil moist election,[link widoczny dla zalogowanych], the southern slopes of loose sandy loam. A 2 year old seedlings (average diameter 2.1 cm, the average height l_23 m) in late planting in April, spacing 2 m × 2 m area of about l_5 hectares. After five years of cultivation and management, seedlings grew well, survival rate is about 95.2%, average height 9.18 m, diameter 8.15 cm, indicating that the European elm in the region can be large area production forests. Green Forest spacing can be 4 years old seedlings of 2.5 m × 3 m. Five, bringing the European elm young grow rapidly, tending to increase the desirability of enhancing child survival rate and preservation rate and improve the dry closing time, the planting year in the 7 to 8 month weeding, fertilizing once a conditional case, and annually thereafter, for five consecutive years . The growth of the plantation complex had dense shrub should be removed strip. Summary and Discussion l_ nursery seedlings should be drilling the main economy is based on practical, a large number of European elm main propagation methods. However, optimal selection and cutting propagation is the main way ahead of strong, can improve the European elm growth. Therefore, this method of propagation of 2, the actual production of our work is of great significance. 2. Requirements of the European elm forest soil deep, moist sandy loam, cold resistance ability, and high temperature and drought, reforestation (timber) can be biennial seedlings, green seedlings by four years of shelter can be used. 3. Jian Yu material weight in Europe: medium-hard, for construction, vehicles, farm tools, furniture and other timber, Samara oil 27.7%,[link widoczny dla zalogowanych], which decanoate fatty acids accounted for 60.4%, is an important industrial raw materials, the European elm is a good timber tree species. Editor: Jianfei to measure weight of a heavy sub-species of a review of a pure sub-
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