摘要
为了解目前德宏橡胶园土壤养分含量状况,采用标准检测方法,对2014年采自云南德宏植胶区3个农场的胶园土壤进行测定。结果表明：德宏植胶区胶园土壤有机质含量为25.72~48.86 g/kg,平均33.12 g/kg;全氮含量为0.42~2.49 g/kg,平均1.30 g/kg;碱解氮含量为115.55~269.13mg/kg,平均169.35 mg/kg;全磷含量为0.31~2.84 g/kg,平均0.93 g/kg;有效磷含量为2.19~7.83 mg/kg,平均5.02 mg/kg;全钾含量为1.11~17.45g/kg,平均9.58 g/kg;速效钾含量为22.57~88.46 mg/kg,平均50.64 mg/kg;土壤养分含量变异系数由大到小依次为钾〉磷〉氮〉有机质,不同采样点土壤养分含量差异性显著。德宏植胶区胶园土壤存在严重的营养不均衡,各农场胶园土壤的有机质、碱解氮含量均达到丰富水平,适合橡胶树生长;而有15%土壤样本缺乏全氮,40%土壤样本缺乏全磷,55%土壤样本缺乏有效磷,55%土壤样本缺乏全钾,45%土壤样本缺乏速效钾,磷、钾含量总体较低。
In order to understand the current situation of rubber plantation soil nutrient in Dehong rubber planting area, the rubber plantation soil collected from 3 farms of the rubber planting area of Dehong in 2014 were determined by using the standard detection methods.The results showed the soil organic matter content of Dehong rubber planting area was 25.72--48.86 g/kg, and the average value was 33.12 g/kg. The total nitrogen content was 0.42-2.49 g/kg, and the average value was 1.30 g/kg. The alkali solution nitrogen content was 115.55-269.13 mg/kg, and the average value was 169.35 mg/kg. The total phosphorus content was 0.31-2.84 g/kg, and the average value was 0.93 g/kg. The effective phosphorus content was 2.19-7.83 mg/kg, and the average value was 5.02 mg/kg. The total potassium content was 1.11-17.45 g/kg, and the average value was 9.58 g/kg. The content of available potassium was 22.57-88.46 mg/kg, and the average value was 50.64 mg/kg. The variation coefficient of soil nutrient content was in descending order of k 〉 P 〉 organic matter, and soil nutrient contents at different sampling points were significantly different. The soil of Dehong rubber planting area had serious nutritional imbalance. The organic matter and alkali solution nitrogen contents in soil both reached the rich level, being suitable for the growth of rubber trees. And there were 15% of soil samples lacked total nitrogen, 40% of soil samples lacking total phosphorus, 55% of soil samples lacking effective phosphorus, 55% of soil samples lacking total potassium, 45% of soil samples lacking available potassium, and the contents of phosphorus, potassium were generally low.
出处
《湖南农业科学》
2015年第11期55-59,共5页
Hunan Agricultural Sciences
基金
云南省德宏州科技创新计划项目(2013-5)
关键词
橡胶园
土壤养分
德宏
云南
rubber plantation
soil nutrient
Dehong
Yunan
