福建农业学报
福建農業學報
복건농업학보
FUJIAN JOURNAL OF AGRICULTURAL SCIENCES
2015年
4期
373-379
,共7页
王利民%黄东风%罗涛%李卫华%邱孝煊
王利民%黃東風%囉濤%李衛華%邱孝煊
왕이민%황동풍%라도%리위화%구효훤
施肥处理%菜地%CO2排放%土壤温度
施肥處理%菜地%CO2排放%土壤溫度
시비처리%채지%CO2배방%토양온도
fertilizer treatments%vegetable plot%CO2 emission%soil temperatures
采用碱溶液吸收法对福州市郊菜地土壤CO2排放特征及其与土温之间的关系进行研究。结果表明,蔬菜生长期的土壤CO2排放通量在苗期和发育前期,它的日变化表现为黑夜>白天;发育后期则为白天>黑夜,且随时间的推移而呈现递减规律。此外,土壤CO2排放通量在苗期较大,不施肥(CK )、化肥(全部基施)、化肥(1/2基施+1/2追施)、化肥+长效肥力素(全部基施)、化肥+长效肥力素(1/2基施+1/2追施)、1/2有机肥+1/2化肥+长效肥力素(全部基施)、1/2有机肥(基施)+1/2化肥(氮钾肥追施+磷肥基施)+长效肥力素(追施)处理分别为2379.08、2482.93、2129.94、1299.02、1890.04、2293.61、3029.99 m g · m -2· d-1,而发育后期土壤CO2释放量相对较小。而且化肥+长效肥力素(全部基施)处理的菜地土壤CO2排放通量小,仅为209.96 mg · m -2· d-1,而1/2有机肥(基施)+1/2化肥(氮钾肥追施+磷肥基施)+长效肥力素(追施)处理则较大,达到了3029.99mg·d-1·m -2,表明化肥+长效肥力素(全部基施)培肥处理适宜在福州市郊菜地进行推广。指数回归分析可知,土壤15 cm处的土层温度是影响菜地CO2释放的主要因素之一,且随温度的增加而升高。
採用堿溶液吸收法對福州市郊菜地土壤CO2排放特徵及其與土溫之間的關繫進行研究。結果錶明,蔬菜生長期的土壤CO2排放通量在苗期和髮育前期,它的日變化錶現為黑夜>白天;髮育後期則為白天>黑夜,且隨時間的推移而呈現遞減規律。此外,土壤CO2排放通量在苗期較大,不施肥(CK )、化肥(全部基施)、化肥(1/2基施+1/2追施)、化肥+長效肥力素(全部基施)、化肥+長效肥力素(1/2基施+1/2追施)、1/2有機肥+1/2化肥+長效肥力素(全部基施)、1/2有機肥(基施)+1/2化肥(氮鉀肥追施+燐肥基施)+長效肥力素(追施)處理分彆為2379.08、2482.93、2129.94、1299.02、1890.04、2293.61、3029.99 m g · m -2· d-1,而髮育後期土壤CO2釋放量相對較小。而且化肥+長效肥力素(全部基施)處理的菜地土壤CO2排放通量小,僅為209.96 mg · m -2· d-1,而1/2有機肥(基施)+1/2化肥(氮鉀肥追施+燐肥基施)+長效肥力素(追施)處理則較大,達到瞭3029.99mg·d-1·m -2,錶明化肥+長效肥力素(全部基施)培肥處理適宜在福州市郊菜地進行推廣。指數迴歸分析可知,土壤15 cm處的土層溫度是影響菜地CO2釋放的主要因素之一,且隨溫度的增加而升高。
채용감용액흡수법대복주시교채지토양CO2배방특정급기여토온지간적관계진행연구。결과표명,소채생장기적토양CO2배방통량재묘기화발육전기,타적일변화표현위흑야>백천;발육후기칙위백천>흑야,차수시간적추이이정현체감규률。차외,토양CO2배방통량재묘기교대,불시비(CK )、화비(전부기시)、화비(1/2기시+1/2추시)、화비+장효비력소(전부기시)、화비+장효비력소(1/2기시+1/2추시)、1/2유궤비+1/2화비+장효비력소(전부기시)、1/2유궤비(기시)+1/2화비(담갑비추시+린비기시)+장효비력소(추시)처리분별위2379.08、2482.93、2129.94、1299.02、1890.04、2293.61、3029.99 m g · m -2· d-1,이발육후기토양CO2석방량상대교소。이차화비+장효비력소(전부기시)처리적채지토양CO2배방통량소,부위209.96 mg · m -2· d-1,이1/2유궤비(기시)+1/2화비(담갑비추시+린비기시)+장효비력소(추시)처리칙교대,체도료3029.99mg·d-1·m -2,표명화비+장효비력소(전부기시)배비처리괄의재복주시교채지진행추엄。지수회귀분석가지,토양15 cm처적토층온도시영향채지CO2석방적주요인소지일,차수온도적증가이승고。
Characteristics of soil CO2 efflux under different fertilizer treatments were investigated by the method of CO2 absorption into alkaline solution in a vegetable plot of Fuzhou suburb , and the relationship between soil temperature and CO2 emission was also studied .The results showed that soil CO2 flux was higher during the night than the day at the seedling stage and early development stage of amaranth;but was opposite at the late development stage ,and decreased as time .Soil CO2 flux for seven fertilizer treatments was the highest at seedling stage ,which were respectively 2 379.08 ,2 482.93 ,2 129.94 ,1 299.02 ,1 890.04 ,2 293.61 ,3 029.99 mg · m -2 · d-1 for CK and all treatments .The lowest CO2 flux was observed at late development stage of amaranth .Among different fertilizing treatments ,the lowest CO2 flux (209.96 mg · m -2 · d-1 ) was recorded in chemial fertilizer and long‐acting fertilizer basal application treatment ,and the highest CO2 flux (3 029.99 mg · m -2 · d-1 ) in 1/2 organic fertilizer (basal application) +1/2 chemical fertilizer (N and P fertilizer dressing application ,and K fertilizer bascal application) + long‐acting fertilizer (dressing application) treatment ,indicating that chemial fertilizer and long‐acting fertilizer basal application fertilizer treatment was suitable for vegetable field management in Fuzhou . Meanwhile ,by exponential regression analysis ,the significantly positive correlation was found between soil CO2 efflux and soil temperature at 15 cm depth under seven fertilizer treatments .