优良马尾松种源营造速生丰产林技术研究

选用广西宁明县桐棉松和福建明溪县马尾松二个种源,在明溪县夏阳乡倒麻岭马尾松速生丰产样板林中设立马尾松速生丰产试验林。分别进行了种源、立地条件、育苗技术措施、造林成活率和营林措施等五个方面试验。幼林阶段结果表明,广西优良种源桐棉马尾松具有明显生长优势。并探讨了桐棉松播种期合理定苗密度。控制水肥,促进苗木木质化,协调其高径比和冠根比,确保苗木质量,及造林的技术措施。

A Study on the Quick-Growing High-Yieid Timber Forest for Masson Pine

A forest of Pinus Massoniana, used the seed sources from GuangXi,Nin-gmin and Fujian,MingXi was established in the Xiayang Yillage,DaoM a Mountain of MingXi country for the tests of seed sources technical procedutes for grow-ing seedlings, site conditions, survival rate of silviculture and treaments of forest management. The results showed that(l) the Donmian Masson Pine of GuangXi fine seed sources made more dominant growth in competition than the MingXi Masson Pine, (2)the best time for its to sow was in May and intelligent density of planting out ranged between 70.000 to 80.000 trees per mu, (3) the ratio between height and diameter as well as crown and a root should be coordinated, (4) in order to accelerate a woody for seedlings, the application of water and of manure should be controle, (5) seedlings may be transplanted to plastic film with their local soils, (6) bunch planting for pre-peration, NP fertilize and weeding was the treatments for the quick-growing high-yield forest, (7) soils in class Ⅱ should be taken for establishing the basel of the quick-growing high-yield forest of Masson Pine so as to cultivate the large diameter stem.