Imports of New Zealand radiata pine

New Zealand radiata pine, also known as New Zealand pine, native to California on a number of islands. But it does not grow well in the country of origin, dry form is poor, slow growth, no attention has been paid. 19th century New Zealand radiata pine to enter New Zealand, thanks to the island's unique climatic conditions, radiata pine settle smoothly and unusually good growth. Through modern genetic breeding and intensive farming techniques, the current New Zealand radiata pine plantation yield per unit area has more than 60 years ago, a 30% increase, radiata pine industry has become one of the total population for the country's economic pillar industries, forestry practitioners 0.56 %. In addition to New Zealand radiata pine in Australia, South Africa, Chile and Spain to get a better development. Pinus radiata vertical distribution in the country of origin at an altitude of 0-330 meters of area, distribution and humid climate, annual rainfall of 380 mm to 800 mm, with an average annual temperature of 16.7 ℃ ~ 18.3 ℃, the absolute minimum temperature -6.7 ℃, the absolute maximum temperature 43 ℃, four seasons without snow, frost-free period 300 days. Introduced from various countries to promote the situation, radiata pine climate adaptation range widely than the area of ??origin, the average temperature of 12 ℃ ~ 20 ℃, the highest temperature of 46 ℃, annual sunshine hours over 2000 hours, annual rainfall of 600 mm to 1250 mm region can grow (except winter rain climate, the average rainfall pattern also in humid climate is the best). Pinus radiata soil has a strong ability to adapt. In the northern part of North Island, New Zealand seaside dunes, the radiation pine grows well, effectively prevent sand invasion, mobile dunes have been fixed; the central North Island of New Zealand radiata pine plantation in the central area of ??names, most soil is volcanic ash soil; Soil southern North Island and northern South Island is mainly loam, sandy loam, etc. In general, radiation-resistant pine barren soil types such as sand, light saline soil, and altitude less demanding, therefore, in addition to timber, it is barren mountain afforestation of good trees. New Zealand forestry scientists for decades after tireless efforts, radiata pine has become a highly fast-growing, widely used timber species, which is extremely rare in the world, similar conifer species. In the New Zealand forestry intensive farming conditions, average annual growth of radiata pine can reach 28 cubic meters per hectare, rotation period of 20 years to 25 years, up to 650 cubic meters Volume ~ 800 cubic meters per hectare, up to 40 meters high , the average individual volume 2.4 m3. Also, there is no large-scale destructive pest reports. If the New Zealand radiata pine plantation production yield and tropical forests are compared, then one hectare is equivalent to 10 hectares radiata pine plantations in tropical forests of Southeast Asia, or 20 hectares Babila new subtropical forest, or 40 hectares in the Amazon The tropical forest. The New Zealand radiata pine average annual growth of 20 cubic meters per hectare - compared with 25 cubic meters of timber species in other countries, the Chilean radiata pine is 18 cubic meters to 21 cubic meters, US longleaf pine is seven cubic meters, Sweden, Russia and Canada are 4.0 cubic meters of spruce, 1.6 m3 and 1.5 m3. Pinus radiata wood is medium density, uniform structure, shrinking average efficiency, strong stability of high quality soft material. The absence of well-decayed wood, heart rot and insect bites and other issues. Wood nail holding power is good, permeability, easy corrosion, drying, curing and color and other treatment. West New Portland radiata pine wood use is widespread, it is difficult to compare with other conifers. Radiata pine is a good material for the construction of wooden houses, located in urban and rural areas beautiful and comfortable housing, mostly with radiata pine wood construction, life of up to more than a century. Pinus radiata wood can be used for large buildings, such as the main building of the National Forestry Research Institute of New Zealand is radiata pine timber wood construction. Pinus radiata wood-based panel manufacturing high-quality materials, all types of wood-based panels are used basically produced in New Zealand radiata pine timber, products sold in Australia, Japan, South Korea and Singapore and other markets. Pinus radiata wood fiber length, the production of high-strength paper a good material with which to produce tissue paper, printing paper, wrapping paper, newsprint, cardboard and other paper products. Pinus radiata wood color soft, strong grip nails, wood furniture is a good use of curing technology enables radiata pine wood furniture more robust and better color texture. Pinus radiata preservative treated wood is a good material for the production of poles, long life, New Zealand radiata pine ranch fence is made of wood. Pinus radiata wood by miscellaneous sodium phenol treatment, can make railroad ties, with strong corrosion resistance. Radiata pine wood Chak soft, good machining performance, and has the characteristics of easy cementation and dyeing, suitable for processing all kinds of crafts and finishing products. New Zealand radiata pine amazing growth characteristics by the people's attention. 1920s and 1930s, the rise of New Zealand radiata pine plantation on a large scale to create a climax. But using modern technology to improve the genetic radiata pine, but only in recent decades to do. After decades of continuous efforts, it has become a New Zealand radiata pine timber species when household, timber production has reached the stage of sustainable development, with the manufacture of a variety of radiata pine forest steady stream into the international market, making New Zealand the world's major timber production of the country. According to the latest statistics, New Zealand's forest coverage rate reached 30 percent, an area of ??8.1 million hectares of forest, of which plantation area of ??700,000 hectares. In plantations, pine forest area of ??1.56 million hectares of radiation, accounting for about 92%. Natural is mainly used for landscaping, water and soil conservation, timber production substantially from the total forest area of ??less than 20% of radiata pine plantations, that is to say less than 6 percent of New Zealand's land fundamental solution to the timber supply The problem, praised by the world. Forest is an important export commodity of New Zealand. According to statistics, 10 percent of the world's plantation wood from New Zealand. Supply of New Zealand forest products accounted for 1.1 percent of world trade in forest products, 8.8% in the Asia-Pacific region; and, these forest products from only 0.05 percent of the world's forest resources of forest, an area equivalent to the annual harvest is only 0.0009 percent of the world's forests. All the achievements should be attributed to high-yielding New Zealand and sustainable management of plantations.