摘要
为探索茶园化肥减施增效的新技术模式,通过盆栽实验,设置覆盖茶树修剪枝(T1)、单作大豆(T2)、覆盖茶树修剪枝并套种大豆(T3)和不做任何处理(CK),分析盆栽中的茶园土壤全磷(TP)、有效磷(AP)、全钾(TK)、速效钾(AK)、全氮(TN)、碱解氮(AN)、有机质含量,pH值和脲酶、纤维素酶、蔗糖酶、过氧化氢酶、酸性磷酸酶活性,探究覆盖茶树修剪枝与套种大豆交互作用下盆栽中的茶园土壤养分和酶活性的响应规律。结果表明:土壤TP、AP、AK以及酶活性对覆盖茶树修剪枝与套种大豆的交互作用响应显著;T3的TN、AN含量高于T1、T2;T3的有机质含量和p H值分别较T1提高了53.92%、2.44%,较T2提高了25.60%、6.03%;蔗糖酶和脲酶活性响应规律相类似,表现为T3>T1>T2>CK,且T3与其他处理差异显著;T3的纤维素酶和酸性磷酸酶活性大于其他处理;PCA排序结果表明,T3、CK接近PC2原点,在PC1上得分相反;T1、T2接近PC1原点,在PC2上得分相反;磷素与钾素之间有很强的相关性,有机质和氮含量与酶活性密切相关;p H值与纤维素酶、脲酶、蔗糖酶、过氧化氢酶、TN、有机质显著正相关。分析表明,盆栽条件下,覆盖茶树修剪枝并套种大豆在茶园土壤养分和酶活性方面存在交互作用,能提高茶园土壤氮素、有机质含量,提高茶园土壤酶活性并缓解茶园土壤酸化,为茶园化肥减施增效的新技术提供科学依据。
To develop a new technology mode of reducing chemical fertilizers and increasing their efficiency in tea garden,a pot experiment was conducted with four treatments: mulching of pruned tea branches( T1),monoculture soybean( T2),mulching of pruned tea branches and interplanting soybean( T3),and control( CK). We examined the contents of total phosphorus( TP),available phosphorus( AP),total potassium( TK),available potassium( AK),total nitrogen( TN),alkali-hydrolyzable nitrogen( AN),organic matter,pH and the activity of urease,cellulase,sucrase,catalase,acid phosphatase,aiming to explore the responses of nutrients and enzyme activities in potted tea garden soil under the interaction of mulching pruned tea branches and interplanting soybean. The results showed that the concentrations of soil TP,AP,AK,and activities of various enzymes had significant response to the interaction between mulching of pruned tea branches and interplanting soybean. The contents of TN and AN in T3 were higher than those in T1 and T2. Organic matter content and soil pH of T3 increased by 53. 92% and2.44% compared with T1,and by 25. 60% and 6. 03% compared with T2,respectively. The activity of sucrase and urease had similar response,showing T3 > T1 > T2 > CK,with the difference between T3 and other treatments being significant. The activities of cellulase and acid phosphatase under T3 were higher than those of other treatments. PCA results showed that T3 and CK were close to the origin of PC2 and had opposite scores on PC1;T1 and T2 were close to the origin of PC1,and had opposite scores on PC2. There was a strong correlation between phosphorus and potassium concentrations,while organic matter and nitrogen content were closely related to enzyme activity. Soil p H value was significantly positively correlated with the activities of cellulase,urease,sucrase,catalase,and the concentrations of TN and organic matter. Under the condition of pot culture,mulching of pruned tea branches and interplanting soybean had interactive effects on soil nutrient and enzyme activity,which could increase the content of nitrogen and organic matter in tea garden soil,improve soil enzyme activity,and alleviate soil acidification,providing a scientific basis for the new technology of reducing fertilizer application and increasing fertilizer efficiency in tea garden.
作者
郭彬
高水练
王苗苗
胡雲飞
向萍
朱秋芳
Tukhvatshin Marat
林金科
GUO Bin;GAO Shui-lian;WANG Miao-miao;HU Yun-fei;XIANG Ping;ZHU Qiu-fang;Tukhvatshin Marat;LIN Jin-ke(College of Horticulure,Fujian Agriculture and Forestry Universily,Fuzhou 350002,China;Anxi Tea Col lege,Fujian Agriculture and Forestry University,Quanzhou 362400,Fujian,China)
出处
《生态学杂志》
CAS
CSCD
北大核心
2021年第11期3561-3569,共9页
Chinese Journal of Ecology
基金
国家重点研发计划项目(2016YFD0200900)
福建省自然科学基金项目(2019J01664)
农业农村部资助项目(KMd18003A和K1520005A07)资助。
关键词
茶园土壤
养分
酶活性
茶树修剪枝
大豆
交互作用
tea garden soil
nutrient
enzyme activity
pruned tea branch
soybean
interaction