摘要
以宁夏中部干旱带的旱柳防护林网为研究对象,测定0.5H(H为树高)、1H、2H、3H、5H与林网中心西瓜的光合生理特性及产量,分析防护林网对西瓜生长的影响。结果表明:林网内西瓜叶片的光合生理特性与其和林网的距离存在显著相关性,与林网中心相比,林网东侧2H、西侧1H、南侧1H与北侧0.5H范围内不同位置的光合有效辐射(PAR)日平均值减少30%以上,林网东侧受到的影响最大;林网内不同位置的净光合速率(Pn)与光合有效辐射间存在显著正相关关系,随着与防护林距离的增加,Pn与PAR呈相似的变化趋势;西瓜产量与气温和光合有效辐射间存在显著正相关关系,林网东侧2H、西侧1H、南侧1H与北侧0.5H范围内西瓜出现减产趋势,减产量为17.46%~38.08%,其余地方处于平产或增产区。综上,防护林通过遮阴影响了西瓜的光合特性,防护林附近区域西瓜减产严重;可在防护林影响范围内种植喜阴作物,增加经济效益。
Taking the SalixmatsudanaKoidz shelterbelt network in the arid zone of central Ningxia as the research object,the photosynthetic physiological characteristics and yield of watermelon in 0.5H(H is the height of the tree),1H,2H,3H,5H and the central section of farmland were measured,and the effects of shelterbelt network on watermelon growth were analyzed.The results showed:significant correlation between photosynthetic physiological characteristics of watermelon leaves and distance from forest net,compared with the center of the forest network,the daily average PAR at different locations in the range of 2H on the east side of the forest network,1H on the west side,1H on the south side and 0.5H on the north side decreased by more than 30%,and the east side of the forest network was most affected.There was a significant positive correlation between net photosynthetic rate(Pn)and PAR at different positions in the forest network.With the increase of distance from the shelter forest,Pn and PAR showed a similar trend.There was a significant positive correlation between watermelon yield and air temperature and PAR.In the range of 2H on the east side,1H on the west side,1H on the south side and 0.5H on the north side of the forest network,the yield of watermelon decreased by 17.46%~38.08%,and the rest was in the area of flat yield or yield increase.Conclusion,the shelter forest affected the photosynthetic characteristics of watermelon through shading,and the yield of watermelon near the shelter forest decreased seriously.Shade-loving crops can be planted within the influence range of shelter forest to increase economic benefits.
作者
张嘉敏
何俊
高富东
李茜
孙兆军
马雅荣
ZHANG Jiamin;HE Jun;GAO Fudong;LI Qian;SUN Zhaojun;MA Yarong(School of Geography and Planning,Ningxia University,Yinchuan 750021;China-Arab Joint International Research Laboratory for Featured Resources and Environmental Governance in Arid Regions;Key Laboratory of Resource Evaluation and Environmental Regulation in Arid Region of Ningxia)
出处
《中国果树》
北大核心
2023年第8期72-78,F0002,共8页
China Fruits
基金
灌区节水-控盐-减污-提质和生态保护协同技术集成与示范项目(2021YFC3201205)
干旱区农林复合高值高效产业模式研发项目(2021BBF02001)
中部干旱带以水定产路径与特色农业高效节水模式研究项目(2021BBF02012)。
关键词
农田防护林
西瓜
光合特性
产量
farmland shelterbelt
watermelon
photosynthetic characteristic
yield
作者简介
张嘉敏,E-mail:zhangjiamin0926@163.com;通信作者:何俊,E-mail:hejun3025@163.com。
