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从麦冬根际微生物区系的变化来研究连作对麦冬生长环境的影响发现:1.在麦冬根际微生物中,细菌占99%以上,放线菌占0.44%,真菌最少,从三个不同取样部位来看,麦冬块根根际土微生物总量>麦冬须根根际土微生物总量>麦冬根外土微生物总量;2.随着连作年限的增加,细菌和放线菌随连作年限增加而下降,但真菌却增加;3.连作对微生物生理类群的影响,在分析的几类有益细菌生理群中,氨化细菌>硝化细菌>固氮菌和纤维素分解菌;随着连作年限的增加,各有益细菌生理群的数量锐减。
The results showed that: 1. In the rhizosphere of Ophiopogon japonicus, bacteria accounted for more than 99%, actinomycetes accounted for 0.44%, fungi at least, from the three According to different sampling sites, the total amount of microorganisms in the rhizosphere soil of Radix Ophiopogonis> the total amount of microorganisms in the rhizosphere soil of Ophiopogon japonicus> the total amount of micro-organisms in the soil of Ophiopogon japonicus; 2. With the increase of continuous cropping years, With the increasing number of years of continuous cropping down, but the fungi increased.3. The effect of continuous cropping on the physiological groups of microorganisms, among the several types of beneficial bacterial physiological groups analyzed, ammoniated bacteria> nitrifying bacteria> nitrogen-fixing bacteria and cellulose-decomposing bacteria; Continuous cropping increases, the number of beneficial bacterial physiological group dropped sharply.