【摘要】 本文分析了毛竹主要营林措施松土、施肥和留养母竹及其综合技术的技术经济效果。分析表明:不同松土深度亩产值间具有极显著差异,松土以25 cm为好,这时反应弹性大,纯收入高。施氮肥和有机肥可极显著地增产,尿素以每亩施20kg为佳;有机肥增产作用大小顺序是饼肥>猪栏肥>干稻草>青草。母竹以留养四度为好。由于△NPV均大于零说明松土25 cm、施尿素20 kg/亩、留四度母竹及其综合技术都是可行的,可根据当地人、财、物资源状况选用。从△NPVR值来看,投资效益以每亩施20kg尿素最好,然后依次是松土25 cm、综合技术和留四度母竹。更多还原

【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.更多还原