Analysis on Technical and Economic Effect of Main Forestry Measures Adopted in Phyllostachys pubescens Grove
- Received Date: 1990-03-02
- Available Online: 2012-12-04
Abstract: In this paper, technical and economic effect of main forestry measures such as loosening the soil, applying fertilizers, preserving the maternal culms and the integrated measures for the growth of Phyllostachys pubescens were analysed. The results showed: there are remarkable difference among different depths for loosening the soil. It is the best that loosening the soil 0~25 cm, and the reaction elasticity is the biggest and net receipts is the highest. Applying nitrogenous fertilizer or manure may obviously increase the output. It is the best to apply urea 20 kg per mu. The order to increase the output from large to small with manure are cake fertilizer, pig manure, rice straw, green grass. It is the best keeping 8-year-old culms in bamboo groves. In this case, the ANPV values are all bigger than zero, this indicates that loosening the soil 0~25 cm, applying urea 20kg per mu, keeping 8-year-old culms and the integrated measures are feasible. According to the different local cases in manpower, capacity and material resources, these measures can be adopted selectively. The benefit from applying urea 20 kg per mu is the best then in sequence loosening the soil 0~25 cm, integrated measures and preserving the 8-year-old maternal culms by the ANPVR level.