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对江西省永丰县官山林场4种施肥处理(45%矿渣肥、39%矿渣肥、毛竹专用肥和对照)毛竹地上部分营养器官N、P、K养分含量及其随年龄增加的变化规律和养分积累、空间分配规律进行研究。结果表明,施肥对毛竹地上器官NPK含量和养分积累具有明显影响。3种施肥处理均能显著提高毛竹地上器官的平均NP含量,毛竹专用肥处理毛竹地上器官平均K含量显著大于对照,而矿渣肥处理毛竹地上器官平均K含量显著小于对照,可能是由于矿渣肥K素配比较低导致;不同器官中,45%矿渣肥处理N含量及各施肥处理K含量在毛竹地上器官中总体表现为叶>秆>枝,其余各处理地上器官NP含量均表现为叶>枝>秆,各营养元素含量大小顺序为N>K>P;矿渣肥处理中N元素积累量最高,毛竹专用肥和对照中K元素积累量最高,均以P元素积累量最低;施肥能够有效提高竹林地上器官对NPK养分含量的积累,N元素积累量为45%矿渣肥>39%矿渣肥>毛竹专用肥>对照;P元素积累量为45%矿渣肥>毛竹专用肥>39%矿渣肥>对照;K元素积累量为毛竹专用肥>45%矿渣肥>39矿渣肥>对照;总积累量为45%矿渣肥>毛竹专用肥>39%矿渣肥>对照。矿渣肥提高了枝营养元素分配比例,毛竹专用肥提高了叶营养元素分配比例。由此可见不同肥料对毛竹生长影响不同,应根据立地条件和经营目标合理选择肥料。
The nutrient contents of N, P and K in aboveground parts of bamboo in four kinds of fertilization treatments (45% slag fertilizer, 39% slag fertilizer, bamboo special fertilizer and control) in Guanshan Forest Farm, Yongfeng County, Jiangxi Province, and their changes with age And nutrient accumulation, spatial distribution of the law to study. The results showed that fertilization had significant effects on NPK content and nutrient accumulation in aboveground organs of Moso bamboo. The results showed that the average K content of aboveground organs of Phyllostachys pubescens Phyllostachys pubescens plantation was significantly higher than that of the control while the average K content of aboveground organs of Phyllostachys heterocycla cv. Phyllostachys pubescens plants was significantly less than that of the control, The ratio of N in 45% slag fertilizer and the K content in different fertilization treatments were leaf> stalk> shoot in aboveground organs of bamboo, and the NP content of aboveground organs in other treatments showed leaf> branch > Stalks, the order of the nutrient elements was N> K> P; the accumulation of N element in the slag fertilizer treatment was the highest, the accumulation of K element was the highest in the special fertilizer for maize and control, and the accumulation of P elements was the lowest; fertilization could be effectively increased Bamboo plantation NPK nutrient accumulation, N element accumulation of 45% slag fertilizer> 39% slag fertilizer> bamboo special fertilizer> control; P element accumulation of 45% slag fertilizer> bamboo special fertilizer> 39% slag fertilizer> Control; K element accumulation of bamboo special fertilizer> 45% slag fertilizer> 39 slag fertilizer> control; total accumulation of 45% slag fertilizer> bamboo special fertilizer> 39% slag fertilizer> control. Slag fertilizers increased the proportion of nutrient elements in the shoots, and the proportion of nutrient elements in the leaves increased with bamboo special fertilizer. This shows that different fertilizers have different effects on the growth of bamboo, should be based on site conditions and business objectives of a reasonable choice of fertilizer.