巨尾桉速生丰产林栽培技术

摘要

In order to look into the cultivation of fast -growing and high-yield forest of huge end of Eucalyptus ,the experiment field sets up with different seed spacing for the forestation .The experiment includes 3 study plots ,in which the dig cave and soil preparation are the same ,but the seed spacing and number of seedling are different .After afforestation ,the seedling growth and survival rate of different plots are quite different . After 4a of forest management including tending ,weeding and fertilization ,the stands are growing well .The results show that the annual grow th of tree height ,DBH ,individual volume and stock volume per hectare is respectively 2 .65 m ,3 .23 cm ,0 .071 m3 and 84 .45 m3 .%对巨尾桉速生丰产林进行了栽培试验，试验地采用不同的株行距整地造林，设3个试验地，各试验地整地挖穴相同、造林株行距不同，每公顷株数不同，造林后苗木生长成活率不同，林木生长量也不同，各试验地林木生长量即有一定的差别。林木经过4a的经营管理抚育除草、施肥，林分生长良好。结果表明：林木生长年长量平均树高2．65m ，胸径3．23cm ，单株材积0．071m3，每公顷立木蓄积量84．45m3。