苹果梨树适宜负载量及树体参数的研究
李雄, 孙伯筠, 李福荣, 苗红英, 程玉琳
Studies on Good Load of Applepear Tree and the Parameter of the Tree Body
Li Xiong, Sun Bojun, Li Furong, Miao Hongying, Cheng Yulin, Jue Peisheng
华北农学报
.
1997, (4): 111
-115
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DOI: 10.3321/j.issn:1000-7091.1997.04.023
