金平县草果果质量与土壤速效养分的相关性初探

Study on Relationship between Fruit Weight and Soil Available Nutrient of Amomum tsao-ko in Jinping County

本试验通过对金平县独角塘、萝卜地和萝卜地西3个草果产地的草果果质量及相应的土壤速效养分含量进行测定,分析二者相关关系。结果表明,根据全国土壤养分分级指标,3个种植区的速效氮、速效磷和速效钾含量分别处于极为丰富、高等和中等水平;通过相关和回归分析,草果果质量与速效氮和速效磷呈显著和极显著负相关,相关系数分别为-0.580和-0.898,而与速效钾显著正相关,相关系数为0.694,草果果质量与速效氮、速效磷和速效钾的回归方程分别为y=-0.001 5x+1.551 9,y=-0.017 1x+1.537 6,y=0.006 7x+0.623 6。

In order to explore the relationship between fruit weight and soil available nutrient of Amomum tsao-ko, the experiment was conducted in three A. tsao-ko producing areas including the Dujiaotang, Luobodi and Luobodixi in Jinping County, the fruit weight and the corresponding soil available nutrient content were measured, and the correlation and regression analysis were performed. The results showed that according to the national soil nutrient grading index, the available N, available P and available K in the three growing areas were at the levels of extremely rich, high, and medium, respectively. According to the correlation and regression analysis, A. tsao-ko fruit weight was significant and extremely significant negative correlated with available N and available P,and the correlation coefficients were-0.580 and-0.898 respectively. The fruit weight was significantly positively correlated with available K, with a correlation coefficient of 0.694. The regression equations of Amomum tsao-ko fruit weight and available N, available P and available K were y=-0.001 5 x＋1.551 9, y=-0.017 1 x＋1.537 6, y=0.006 7 x＋0.623 6, respectively.