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为了解新疆石榴主产区土壤养分状况,采用室内分析测定,对石榴果园不同树龄的0~20cm、20~40cm范围内石榴园土壤有机质、全氮、速效氮、速效磷、速效钾含量进行了测定分析。结果表明:石榴园不同树龄、不同土层深度的土壤有机质含量范围分别为0.576 0~0.659 5g·kg~(-1)、0.402 5~0.504 0g·kg~(-1),平均值分别为0.617 8、0.453 3g·kg~(-1);土壤全氮含量变化范围分别为0.069 5~0.072 5mg·kg~(-1)、0.058 5~0.060 5mg·kg~(-1),平均值分别为0.071 0、0.059 5mg·kg~(-1);土壤速效氮含量变化范围分别为54.079 0~63.106 0mg·kg~(~(-1))、52.091 0~57.153 5mg·kg~(-1),平均值分别为58.592 5、54.622 3mg·kg~(-1);土壤速效磷含量变化范围为32.362 5~36.704 0mg·kg~(-1)、19.683 5~22.042 5mg·kg~(-1),平均值分别为34.533 3、20.863 0mg·kg~(-1);土壤速效钾含量变化范围为309.088 0~395.853 2mg·kg~(-1)、301.294 2~365.353 0mg·kg~(-1),平均值分别为352.470 6、333.323 6mg·kg~(-1)。分析发现,石榴果园土壤中除速效钾含量偏高外,有机质、全氮、速效氮含量偏低,速效磷含量中等,石榴园土壤养分不平衡。该试验为今后石榴园土壤合理施肥提供科学依据。
In order to understand the soil nutrient status of main pomegranate pomegranate area in Xinjiang, the contents of soil organic matter, total nitrogen, available nitrogen, available phosphorus and available potassium in pomegranate orchards with 0 ~ 20cm and 20 ~ 40cm in different ages of pomegranate orchards Determination and analysis. The results showed that the content of soil organic matter in different age and soil depth of pomegranate garden were 0.576 0-0.6659 5 g · kg -1 and 0.402 5-0.504 0 g · kg -1, respectively, the average values were 0.617 8,0.453 3 g · kg -1. The soil total nitrogen content ranged from 0.069 5 to 0.072 5 mg · kg -1 and from 0.058 5 to 0.060 5 mg · kg -1, respectively, with the average values of 0.071 0,0.059 and 5 mg · kg -1, respectively. The available nitrogen content in soil ranged from 54.079 0 to 63.106 mg · kg -1, 52.091 0-57.153 5 mg · kg -1, The average values of soil available P were 58.592 5 and 54.622 mg · kg -1, respectively. The content of available phosphorus in soil was 32.362 5 ~ 36.704 0 mg · kg -1, 19.683 5 ~ 22.042 5 mg · kg -1, The average values of available potassium were 34.533 3 and 20.863 mg · kg -1, respectively. The available potassium contents ranged from 309.088 0 to 395.853 2 mg · kg -1 and from 301.294 2 to 365.353 0 mg · kg -1, The average values were 352.470 6,333.323 6mg · kg -1. Analysis found that pomegranate orchard soil in addition to high available potassium content, organic matter, total nitrogen, available nitrogen content is low, available phosphorus content is medium, pomegranate garden soil nutrient imbalance. The experiment provides a scientific basis for the future rational fertilization of pomegranate soil.