摘要
对1987～2003年黑龙江省植烟土壤8992个样品的速效磷含量进行了统计分析。结果表明,黑龙江省植烟土壤速效磷平均含量呈明显增加趋势,目前土壤速效磷平均含量>50mg/kg,平均每5年增加10mg/kg;土壤速效磷>40mg/kg的土壤数量逐渐提高,平均每3年增加10个百分点;土壤速效磷<10mg/kg呈逐步下降的趋势。黑龙江省烟区土壤磷含量处于非常丰富的状态。
Available phosphorus contents of 8 992 soil samples of flue-cured tobacco fields from 1987-2003 in Heilongjiang province were tested. The results showed that mean contents of available phosphorus increased. The current mean was greater than 50 mg/kg, and increased 10 mg/kg every five years. Percentage of land with 〉40 mg/kg available phosphorus increased at a rate of 10% every three years. The percentage of land with 〈10 mg/kg available phosphorus content decreased. Available phosphorus is sufficient in tobacco planting soil in Heilongjiang.
出处
《中国烟草科学》
CSCD
2007年第1期36-39,共4页
Chinese Tobacco Science
基金
国家烟草专卖局重大资助项目(110200001011)
关键词
植烟土壤
速效磷
tobacco planting soil
available phosphorus
