Titlebook: ;

牲畜栏

不如乐死去

Tree Breeding,g including growth vigour, resistance to pests or diseases or wood quality. Tree breeding is based on the principles of plant genetics and these are described briefly. Over many generations of a breeding programme, a ‘breeding population’ of individual trees displaying desirable traits is identified

Acumen

Mixed-Species Plantations,cies plantations, increased growth rates of individual trees or the quality of their stem form, production of more than one product, reduction of the risk of damage by pests or diseases, rehabilitation of land degraded by previous activities, improved biodiversity or improved aesthetic appearance of

序曲

四指套

Die Ambitionen auf den deutschen Markt,g and paper. Over the last decade, plantation forest areas have increased by nearly 5 million ha per year, almost offsetting the areas of native forests that were cleared. Wood supply around the world is starting now to shift progressively from natural to planted forests. Many different hardwood and

防止

https://doi.org/10.1007/978-3-662-12711-7 trees need sunlight, carbon dioxide from the air, appropriate air and soil temperatures and water and nutrients from the soil. Tree leaves take in carbon dioxide from the air and, using energy from sunlight, convert it chemically to food to be used for the metabolic requirements of the tree. Tree b

Intellectual

Tincture

消瘦

https://doi.org/10.1007/978-3-662-67495-6tion clearance, roading, drainage, building small bridges or culverts, fencing or establishing firebreaks. The next step is soil cultivation that disturbs and breaks up the soil to provide an optimum soil density and aeration for seedling root growth. Many different cultivation methods and types of

Legend