【摘要】 对料慈竹叶养分分析结果表明：竹叶养分以N为主,元素排序为N＞K＞Ca＞Ms＞P＞Fe,总含量在509·kg-1左右;施化肥多少对竹叶N、P、K、Ca含量无显著影响,对Mg、Fe有显著影响;1年生叶中Mg与P、Ca、Fe有显著的负相关,P、Ca、Fe间为显著正相关;竹叶养分状况以1年生叶的含量同生长量间的相关性大,嫩竹叶则小,因此诊断用样品以1年生叶为佳;竹材产量与竹叶养分含量关系表现为随元素个数的增加,相关系数渐次增大,故而产量与养分间的相关性表现为多因子的综合效应;施少量肥可增加竹叶Mg而降低Fe,因此施肥是提高产量的有效措施,最佳施肥方案为,每年施“尿素、过磷酸钙、氯化钾”肥分别为“69、9.48、7848”kg／hm2。更多还原

【Abstract】 Analysis on nutrient content of the leaves of Bambusa distegia resulted: (1) the main nutrient element is N and the nutrient elements’s erder is N>K>Ca>Mg>P>Fe The whole content is about 50g. kg-1 1; (2) application of chemical fertilizers has no significant effect on the content of N,P,K,Ca in the leaves,except Mg and Fe; (3)there is significant negative correlation between Mg and P,Ca,Fe in the leaves of one year bamboo, but sigmificant positive correlation between P,Ca,Fe; (4)there is bigger correlation coefficent between timber production and the content of elernents in the leaves of one year bamboo than of new bamboo,so one year bamboo leaves are selected as the sample for the nutrlent dlagnesis; (5 ) the more elements contain the higher correlation between the production and the foliar nutrient content, in a word,it’s a multiple effect; (6)application of some fertilizer can increase Mg and decrease Fe content in the leaves,fertilization is the effective measure to increase yleld,the optimal dose and composition of fertilizer in each year is: urea/superphosphate/pelasslum chloride for 69/9, 48/78, 48 kg/hm2.更多还原