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采用土壤养分状况系统研究法 ,通过对奉新和铜鼓两地笋用林土壤的理化分析 ,吸附试验及温室盆栽试验 ,进行了 1 2种养分的系统研究 ,分析了土壤养分含量特点 ,初步研究了养分限制因子。研究结果表明 :奉新笋用林土壤养分限制因子及亏缺顺序为P ,N ,K ,S ,Mg ;盆栽不施P ,N ,K ,S,Mg分别减产 65.6% ,4 7.7% ,1 8.4 % ,1 5.3 % ,1 5.1 %。铜鼓笋用林土壤养分限制因子及亏缺顺序为Ca,P ,Mg,N ;盆栽不施Ca,P ,Mg,N分别减产 88.3 % ,81 .2 % ,4 2 .9% ,3 0 %。
Based on the systematic study of soil nutrient status, 12 kinds of nutrients were systematically studied through physical and chemical analyzes, adsorption experiments and greenhouse pot experiments on shoots of bamboo shoots from Fengxin and Tonggu. The characteristics of soil nutrient contents were analyzed, Nutrient limitation factors were studied. The results showed that the limitation factors and deficit sequence of soil nutrient in Phytophthora infuschemus forest were P, N, K, S, Mg. The yield of pots did not increase by 65.6%, 4 7.7%, 1 8.4%, 1 5.3%, 1 5.1%. The limitation factors and the order of deficit of soil nutrients in copper-drum bamboo forest were Ca, P, Mg and N, respectively. The pots were reduced in Ca, P, Mg and N by 88.3%, 81.2%, 42.2% and 30% .