浙江省安吉县毛竹笋竹两用林土壤养分分析

近年来,受国内外经济形势的影响,浙江安吉县的毛竹价格逐年下降,毛竹林的经济效益受到影响,如何提高毛竹林的生产力、培育大径竹材已经成为毛竹林经营的重要内容。毛竹林的生产力与土壤养分密切相关,测定分析了安吉县主要毛竹产区笋材两用林的土壤养分,探讨了竹林经营模式、竹林产出与土壤养分状况的关系。结果表明:安吉县毛竹林土壤普遍缺乏速效钾,而土壤有机质含量较为丰富;竹林平均胸径随土壤速效磷含量的增加而增加。因此,培养大径级竹林应增施磷肥和钾肥。研究结果可为优化毛竹林经营模式、提高竹林产量以及合理制定竹林施肥策略提供依据。

Investigation of Soil Nutrients in Moso Bamboo Shoot-Timber Forest at Anji County

In recent years, bamboo prices fell year by year, and the economic benefits of bamboo forest in Anji, Zhejiang Province had been affected by the economic situation at home and abroad. How to improve the productivity of moso bamboo forest and cultivate the large-diameter bamboo timber has become the main topic in bamboo forest management. The productivity of moso bamboo forest is closely related to the soil nutrients. In this study, the soil nutrients in the moso bamboo shoot-timber forest in the major producing areas of Anji were analyzed, and the relationship between bamboo forest management model, productivity and soil nutrients was discussed. The results showed that moso bamboo forest in Anji is generally in short of available potassium content, while the soil is abundant in organic matter content; the DBH of the moso bamboo forest increased with the increase of available phosphorus. Thus, phosphate fertilizer and potassium fertilizer should be applied to cultivate the large-diameter moso bamboo forest. The study could provide the references for the optimization of moso bamboo forest management, the improvement of forest production and the reasonable formulation of bamboo fertilization strategy.