In order to increase solar energy utilization ratio in mulberry gardens, mulberrytrees of different varieties were planted alternately to regulate the growth relationshipbetween individual trees and tree population, between arboreous and Bush mulberries. 为提高桑园空间与光能利用率,在桑园采用不同的桑树品种搭配、进行高低立体交叉栽植,合理调整桑树单株与群体、乔木桑与灌木桑之间的生长关系;
Characteristics of Arboreous Species Diversity among Different Forest Community Types in Kanas Tourism District, Xinjiang 新疆喀纳斯旅游区森林群落乔木层物种多样性特征
Based on the analysis of office network data flow we lay stress on the arboreous security state machine model which befits the office network of army or government. 探讨机关办公网络的数据流特点,并提出一种适合部队和政府机关办公网络的树状安全状态机模型。
In this pa-per, the progress of research of biomass energy of forest in Hubei Province, concering the building of germ plasm resource of energy plants, diesel oil extracted from arboreous fruits, utilization of forest castoff and alcohol transformation from wood fiber are summarized. 本文介绍了湖北省林木生物质能源研究情况,涉及到能源树种种质资源库建设、树木果实榨取柴油、林木废弃物利用以及木纤维转化酒精等方面的研究。