【摘要】 <正> 一、概述广东省怀集县的茶秆竹是我国特产的珍贵竹种之一,竹秆通直,节平,壁厚,光滑,坚韧,材质优良,可制各种竹器家具、雕刻装饰、钓鱼竿、滑雪杖、旗竿、篱笆等。在竹类中竹材纤维含量最高,占53.2％,适于造纸和制人造丝浆。竹秆用细沙除垢后,称“沙白竹”,呈象牙色,具光泽,不易更多还原

【Abstract】 Pseudosasa amabilis is a rare commercial bamboo species in china. The study on its bio-ecological properties is very important for afforestation. As far as we know there are 6 Pseudosasa species in China. One of these species, P. amabilis in Huaiji county, has 3 varieties which are different to some extent morphologically and in the microscopic structure of their timber. The weather conditions required by P. amabilis are: High temperature and humidity, distinct dry and rainy seasons, a short frost period and sufficient sunshine. The soil especially suitable to it is mellow acid loam developed from shale or sandstone. The investigation carried out in Aochai area, Huaiji county shows the diameter growth of the new rhizome starts from early January and ends in mid-April all together about 90-110 days, and the length growth starts from early July and ends in Novemenber, all together about 135-155 days. At the end of this growth period the average diameter of the rhizome is 1 cm and the usual length is 1.5-2.5m. The longest one found is 15.14m. The period needed for bamboo shoots to go through the process of differentiation, swelling and coming out of the soil is 100-120 days, starting from late December and ending in mid-April. Shooting lasts 20-25 days, from late March to mid-April, which occurs 7-10 days earlier on the forest edge. It takes the new culms 35-45 days to finish their height growth. The period required by the culms inside the forest is 5 days shorter than that required by those on the edge. And 40-59 days after shooting comes the period for the new culms to put forth leaves. The suitable air and soil temperatures for underground growth of the young culms are 16°-18℃. The most suitable weather for shooting and the early development of the young culms in the investigated area is in April with the soil temperatures over 20℃ and a great amount of rainfall. The growth of the young culms reaches its peak in May when the soil temperatures are over 25℃ and the rainfall is abundant.更多还原