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研究了嫁接茄根系分泌物对黄萎菌菌丝生长的影响,嫁接对茄子根际土壤黄萎菌数量、酶活性和微生物种群数量影响及嫁接正重茬土壤水提液对茄子种子萌发和幼苗生长的影响。结果表明:在培养4～5d,嫁接茄根系分泌物显著抑制了黄萎菌菌落生长;嫁接茄土壤黄萎菌数量在不同时期均显著低于对照;总体上,嫁接茄根际脱氢酶、过氧化物酶和多酚氧化酶较对照有所增强;嫁接还表现出根际微生物总量、细菌、放线菌数量增加,真菌数量减少,细菌数比真菌数和放线菌数比真菌数增加;嫁接茄正重茬土壤水提液表现出促进茄子发芽和幼苗生长(根长除外),重茬自根茄土壤水提液抑制了茄子发芽和幼苗生长。
The effects of grafted eggplant root exudates on the growth of Verticillium dahliae were studied. The effects of grafting on the amount of Verticillium dahliae, enzyme activities and microbial populations in the rhizosphere soil of eggplants and the effect of grafted soil aqueous extracts on the seed germination and seedling growth of eggplant Impact. The results showed that the colonization of eggplant roots significantly inhibited the growth of Verticillium dahliae; the amount of Verticillium dahliae in the grafted soil was significantly lower than that of the control at different growth stages. Generally, the rhizosphere dehydrogenase, Peroxidase and polyphenol oxidase increased compared with the control; grafting also showed the total number of rhizosphere microbes, the number of bacteria, actinomycetes increased, the number of fungi decreased, the number of bacteria than fungi and actinomycetes than fungi Increased; grafted eggplant is heavy stubble soil water extract showed eggplant germination and seedling growth (except for root length), stubble from root and shoot soil water extract inhibited eggplant germination and seedling growth.