Bamboo Willow Planting Density, Pruning Management Techniques

In recent years, due to the implementation of the natural forest resources protection project, the country has completely implemented the policy of prohibiting logging of natural forest commercial forests. As a result, China’s domestic wood production has been significantly reduced. As a resource-based product, the price of the international timber market has also been increasing year by year, although China’s Every year, it takes a lot of foreign exchange to import timber from foreign countries at a high price, but it is still difficult to make up for the contradiction between supply and demand in the domestic timber market in the short term. In order to solve these contradictions, the state vigorously advocates the creation of fast-growing forests to meet the needs of the national production. However, the new type of willow tree, Zhuliu, currently on the market, due to its fast-growing nature, is matured and used widely, the economic benefits of planting willows are high. It can also ease the situation of timber shortage after China has implemented the protection of returning farmland to forests and natural forests. What's more important is that Zhuliu has the advantages that other fast-growing tree species do not possess. Therefore, it is loved by the majority of growers since its birth.

Zhuliu is a new species of Willow tree that has been bred by the high-tech tree to produce a very fast-growing willow tree. Compared with other fast-growing tree species, Zhuliu is rich in planting density, fast growing, strong in resistance, and shortened by half a year. The characteristics of high cultivation efficiency per unit area per unit time are a rare breed of man-made fast-growing timber forests; growers can adopt reasonable planting densities according to specific conditions when planting them, so as to avoid tree differentiation or natural conditions caused by dense forest trees. The rapidity of pruning affects the volume of individual plants, and it is not due to sparse forests. Excessive evaporation of woodland moisture causes soil drought. At the same time, the output per unit area must be guaranteed by ensuring a certain number of plants. Afforestation is too dense. Young forests are closed for several months. Due to poor ventilation and poor light, trees are prone to disease. At the same time, due to dense vegetation, the fallen trees begin to shed and dry branches less than 1 year old, seriously affecting the normal growth of trees. Often the forest is not mature, the single plant has low volume, and the yield is low when felling. The planting is too sparse, the number of plants per unit area is too small, and the timber production is also low. Therefore, it is very important to use proper planting density. Because bamboo willows are different from other tree species, bamboo willows have a narrow canopy, so their planting density is greater than that of other fast-growing species. In general, the standard planting pattern of large diameter wood of Zhuliu is 300 plants/mu, and that of medium diameter plants is 400 plants/mu; forest-paper integrated planting and ultra-short-term rotation planting can produce 2000-5000 plants per acre.

For the majority of Zhuliu growers, in order to obtain the best economic benefits, in addition to adopting appropriate density and strengthening the management of water and fertilizer, proper pruning in the growth process of bamboo willows is extremely important. Branches can not only improve the quality of trunks, but also enable the full concentration of nutrients for bamboo willow growth, improve light ventilation and other issues, and effectively prevent diseases and insect pests. Bamboo pruning can be divided into two stages, winter shearing or spring Shears and summer shears are trimmed before falling into the second year after falling into the fallen leaves, mainly the vigorously growing side branches on the trunk, trimmed moderately from the bottom up until about 2/3 of the trunk. Summer pruning is mainly to cut off the vigorous growth of lateral branches, dense branches, pests and diseases, improve its growth of ventilation and light conditions, centralized supply of nutrients to the central leadership. For the repaired larvae, burn them centrally. In addition, after the pruning, the sprouting of the lower main trunk should be promptly erased. Pruning Notes: First, pruning height, pruning year by year from high 1/3 to 1/2. The second method is pruning. Close to the trunk with a knife to repair the leveling, the incision should be smooth, do not leave piles, do not break the skin, do not hurt dry.

The bamboo willows will be protected by scientific methods. Zhu Liu will be able to grow talents in 4-6 years, and bamboo willows will be white, delicate, uniform, not hollow, and not blackhearted. It is a good raw material for making fiberboard, blockboard and plywood. Pulp performance is superior to poplar, eucalyptus and other tree species, can replace imported long fiber pulp. Moreover, bamboo willow has anti-saline and anti-cariogenic properties. It can normally grow under ph values ​​of 8.0-8.5 and salinity of up to 14000ppm. It can still grow normally after two months of flooding. This shows that bamboo willow is a The rare ecological tree species has dual functions of economic benefits and ecological benefits.

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