CAJ | 학술논문

试验研究表明,在春小麦全生育期进行补充灌溉和升高CO2浓度能够有效提高田间生态系统边缘效应.与没有CO2浓度升高比较,当CO2浓度升高40～160μmol/mol时,舂小麦田间生态系统边缘效应的面积增加1.8～3.6m2.在春小麦全生育期补充灌溉60mm与补充灌溉30mm比较,田间生态系统边缘效应有显著变化.特别是将CO2浓度升高与补充灌溉进行组合,较没有CO2浓度升高与补充灌溉比较,春小麦田间生态系统边缘效应面积提高了300%～500%.同时研究还表明,在春小麦全生育期CO2浓度升高与补充灌溉可以显著提高春小麦田间生态系统边缘效应系数.CO2浓度升高与补充灌溉进行组合较没有CO2浓度升高与补充灌溉比较,边缘效应系数提高4.0～6.7.因此,CO2浓度升高与补充灌溉组合对提高春小麦边缘效应有显著作用.
시험연구표명,재춘소맥전생육기진행보충관개화승고CO2농도능구유효제고전간생태계통변연효응.여몰유CO2농도승고비교,당CO2농도승고40～160μmol/mol시,용소맥전간생태계통변연효응적면적증가1.8～3.6m2.재춘소맥전생육기보충관개60mm여보충관개30mm비교,전간생태계통변연효응유현저변화.특별시장CO2농도승고여보충관개진행조합,교몰유CO2농도승고여보충관개비교,춘소맥전간생태계통변연효응면적제고료300%～500%.동시연구환표명,재춘소맥전생육기CO2농도승고여보충관개가이현저제고춘소맥전간생태계통변연효응계수.CO2농도승고여보충관개진행조합교몰유CO2농도승고여보충관개비교,변연효응계수제고4.0～6.7.인차,CO2농도승고여보충관개조합대제고춘소맥변연효응유현저작용.
In this study, our aim is to clarify the dynamic changes of border effect of spring wheat field system under elevated CO2 concentration and supplemental irrigation in a semiarid region of China. The experimental results showed that elevated CO2 concentration and supplemental irrigation could improve the effect of crop border. In elevated CO2 concentration from 40 to 160 μmol/mol, the border effect area was improved by 1.8～3.6m2 in comparison with that without elevated CO2 concentration. The border effect area, in supplemental irrigation 60mm, was significantly changes than that in supplemental irrigation 30 mm and without supplemental irrigation. Specially, under the combination of elevated CO2 concentration and supplemental irrigation, the border effect area was improved by 300%～500% in comparison with that without elevated CO2 concentration and supplemental irrigation. At the same time, the experimental results showed that the elevated CO2 concentration and supplemental irrigation could decrease the core area/border effect area (Q). In the combination of elevated CO2 concentration and supplemental irrigation, Q was decreased by 4.0～6.7 in comparison without elevated CO2 concentration and supplemental irrigation. Thus, the combination of elevated CO2 concentration and supplemental irrigation played an important role in the improvement of the effect of spring wheat border.