摘要
Abstract
Soil physicochemical characteristics analysis under different degrees of degradation grassland were studied by analysis of indoor soil samples in Gongge'er to improve the sustainable development of Gongge'er . The results showed that the soil bulk density was maximum in the severe degradation district ,average value was 1 .53 g・cm‐3 ,soil bulk density was minimum in non‐degradation district ,average value was 1 .36 g・cm‐3 ;The pH and available phosphorus of different degree of degradation grasslands had no significant difference ;The total nitrogen content was the highest in non‐degradation area ,the average value was 0 .83 g・ cm‐3 ,it was the lowest in severe degradation area ,the mean value was 0 .35 g・cm‐3 ;The available potassium content was the highest in non‐degradation area ,average value was 156 .45 mg・kg‐1 ,there was no significant difference among others ;Non‐degradation region content of organic matter was the highest ,the average value was 23 .23 g・cm‐3 , it was the lowest in severe degradation area ,average value was 7 .01 g・cm‐3 ;The relationship between soil bulk density and soil total nitrogen ,organic matter ,available potassium and available phosphorus showed significant correlation ,there was no significant correlation between available phosphorus and available potassium ;The soil pH had no correlation with soil bulk density ,and negatively correlated with soil nutrient .The conclusion could be drawn from data ,the soil was acid ,the contents of organic matter ,available phosphorus and total nitrogen were low ,soil available potassium content was the middle level .关键词
草原/土壤理化性质/相关性Key words
grassland/soil physicochemical properties/correlation分类
农业科技
