论文部分内容阅读
在野外样地调查的基础上,利用均值t检验的方法,研究了影响小篷竹生长的地形和土壤因子,结果表明:①在地形因子当中,影响小篷竹生长的主要因子为坡向和海拔,阳坡和较低海拔更利于小篷竹的生长,海拔900m为小篷竹生长良好与否的分界线.此外,坡下部生境、坡度30°以下较利于其生长,但影响不显著.②在土壤因子当中,影响小篷竹生长的主要因子为土壤厚度、有机质、有效磷和速效钾,土层厚度大于15cm、有机质质量分数100g/kg、有效磷质量分数2～3mg/kg、速效钾质量分数125mg/kg以上最适宜其生长,尤其对土壤有效磷和有机质质量分数要求苛刻.此外,中性土壤和较高的碱解氮质量分数较适宜其生长,然而影响不明显.
Based on the field survey, the mean t-test was used to study the topography and soil factors that affect the growth of P. canopynsis. The results showed that: (1) Among topographic factors, Elevation, sunny slope and lower elevation are more beneficial to the growth of canopy bamboos, and the altitude of 900m is the dividing line for the growth of canopy bamboos.In addition, the slope below 30 ° is more conducive to its growth but the effect is not significant. Among the soil factors, the main factors influencing the growth of P. canadensis were soil thickness, organic matter, available phosphorus and available potassium. The thickness of soil was more than 15 cm, the mass fraction of organic matter was 100 g / kg, the effective phosphorus content was 2 ~ 3 mg / kg, Potassium concentration above 125mg / kg is the most suitable for its growth, especially for soil available phosphorus and organic matter mass fraction.In addition, neutral soil and high content of alkaline hydrolysis nitrogen is more suitable for its growth, but the effect is not obvious.