摘要
在不同施肥处理下,对西北半干旱区灌耕灰钙土,土壤转化酶、脲酶和碱性磷酸酶活性的剖面分布以及土壤酶与土壤全量养分、土壤酶之间相关性进行研究。结果表明,各处理在小麦的各个生育期土壤转化酶、脲酶和碱性磷酸酶的活性均为:0～10 cm土层>10～20 cm土层>20～40 cm土层,且绝大多数处理各土层之间酶活性差异都达到显著水平。土壤转化酶、脲酶和碱性磷酸酶与土壤有机质、全氮、全磷含量基本呈正相关,有的达到显著和极显著水平,三种酶与全钾含量均为负相关,基本未达显著。土壤转化酶、脲酶和碱性磷酸酶活性三者之间的相关性呈极显著和显著正相关,酶的总体活性大小可以用来衡量土壤肥力水平的高低。
This study examined the profile distribution and relationships of soil total nutrients＇ contents and the activities of intervase,urease and alkali-phosphatase in irrigated cultivation Sierozem under different fertilizer amendments in Semiarid Area of Northwest China.The results showed that the order of the activities of intervase,urease and alkali-phosphatase in different soil depths was 0-10 cm 10-20 cm 20-40 cm during the growing phase of wheat,and it was significantly different as for the soil enzymes＇ activities between different soil depths in most of the fertilizer treatments.The activities of soil intervase,urease and alkali-phosphatase were positively correlated with the contents of soil organic matter,total nitrogen and total phosphorus.There were significantly positive correlation among the activities of intervase,urease and alkali-phosphatase in soil.Generally,the activities of soil enzyme could be used to evaluate to the level of soil fertility.
出处
《土壤通报》
CAS
CSCD
北大核心
2010年第6期1386-1391,共6页
Chinese Journal of Soil Science
关键词
施肥
小麦生育期
灌耕灰钙土
酶活性
剖面
相关性
Fertilization
Growing phase of wheat
Irrigation farming Sierozem
Soil enzyme activity
Profile
Correlation
