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试验以15年生枳砧金弹(Fortunella crassifolia Swingle)和成年野生山金柑(F.hindsii Swingle)为试材,于1989～1991年在浙江宁波北仑、浙江普陀桃花岛进行。设置免耕生草覆草、耕翻生草覆草、清耕(对照)、野生(对照)等4个处理。结果表明。随耕翻次数增加,根系VA菌根侵染率降低,VA菌根侵染率野生>免耕生草覆草>耕翻生草覆草>清耕,20～40厘米土层>10～20厘米土层>0～10厘米土层。离根尖1厘米左右根段中泡囊出现百分率与VA菌根侵染率呈极显著或显著正相关。免耕可保护菌根,提高菌根侵染率。
The experiment was conducted on 15-year-old Fortunella crassifolia Swingle and F.hindsii Swingle from 1989 to 1991 in Beilun, Ningbo, Zhejiang and Putaohua Island, Zhejiang. Set no-tillage grass mulching, plowing the grass mulching, clearing farming (control), wild (control) and other four treatments. The results show. The number of VA mycorrhizal colonization decreased with the increase of the number of tillage tillers, while the rate of VA mycorrhizal infection was wild> no-tillage grass mulching> tillage overgrazing grass> clear tillage, 20-40 cm soil layer> 10-20 Cm soil layer> 0 ~ 10 cm soil layer. The percentage of vesicles in the root segment about 1 cm from the root tips was significantly or significantly positively correlated with the rate of VA mycorrhizal infection. No-tillage can protect mycorrhizal, improve mycorrhizal infection rate.