毛竹小母竹造林快速成林成材试验

Experiments on Fast Bamboo Seedling Afforestation

为解决大母竹造林种源不足且成本过高的问题,2001年开始进行了小母竹造林快速成林成材试验,系统地研究了保留株数、施肥种类和数量及施肥季节对平均地径、单株发笋数及发笋成竹率等方面的影响.结果表明:保留株数对平均地径影响较大,以2株为佳,施肥种类和施肥时间的差异对平均地径影响不显著;保留株数、施肥种类和数量及施肥季节对单株发笋数都有极显著影响,保留2株,施复合肥、磷肥和尿素分别0.5、0.1和0.2 kg及1月、6月施肥,单株发笋数最多;保留株数、施肥种类和数量及施肥季节对毛竹发笋成竹率影响不明显.

In order to solve the problem of insufficient sources and high costs for big bamboo afforestation, a systematic study was conducted since 2001 of bamboo seedling afforestation, particularly of the influence of its retained bamboo number, fertilizer type and quantity, and fertilizing season upon its average ground diameter, single bamboo shooting and rate of shoots maturing into bamboos. The results show that the retained number has a big impact upon the average ground diameter but the difference of fertilizer type and season does not have an obvious one upon it; that the retained number and fertilizer type, quantity and season, have a remarkable influence upon the number of single bamboo shoots; that this number of shoots become the biggest when two bamboo trees are retained, the ratio of compound fertilizer, phosphorus and urea is 0. 5 ： 0.1 ： 0.2 kg and the fertilizing time is in January and June and that the rate of shoots maturing into bamboos has no apparent relation with the retained bamboo number, fertilizer type and quantity, and fertilizing season.