论文部分内容阅读
在田间条件下布置了毛白杨ＶＡ菌根与外生菌根混合接种抗涝性试验。结果表明，在毛白杨菌根接种后若发生较长时间的水涝会严重抑制硬皮马勃、缩球囊霉菌单独及混合接种生长效应的发生，地球囊霉菌接种甚至会抑制毛白杨苗木的高生长。其原因是接种苗叶片的生长发育因水涝而受阻，使得苗木的光合产物积累能力急剧下降；水涝对毛白杨菌根接种苗的光合及蒸腾特性的影响不大，它们的日变化与在正常情况下的日变化表现出完全类似的规律。外生菌根与ＶＡ菌根关系对毛白杨菌根接种苗光合作用的影响依然存在；毛白杨苗木根系上硬皮马勃的感染率与ＶＡ菌根的感染率之间仍存在较明显的负交互作用关系；另外，水涝还能严重地抑制土壤中地球囊霉菌和缩球囊霉菌的繁殖。地球囊霉菌比缩球囊霉菌的抗水涝的能力要强的多。
Under the field conditions, the VA mycorrhiza and ectomycorrhizal hybrids were inoculated with the flooding resistance test. The results showed that if waterlogging occurred after a long time of mycorrhizal fungi inoculation, the occurrence of single and mixed inoculation growth effects would be severely inhibited. Inoculation of A. gossypii even inhibited the growth of Populus tomentosa seedlings High growth. The reason is that the growth and development of inoculated seedling leaves are blocked by waterlogging, which makes the photosynthate accumulation ability of seedlings drop sharply. Waterlogging has little effect on photosynthesis and transpiration of Populus tomentosa seedlings, and their diurnal changes With the daily change under normal circumstances showed exactly the same rules. The relationship between ectomycorrhizae and VA mycorrhizae still had some effects on the photosynthesis of mycorrhizal fungal inoculation seedlings. There was still a significant difference between the infection rate of A. capitatum and the mycorrhizal infection rate Negative interaction; In addition, waterlogging can also seriously inhibit the soil in the soil globular mold and shrinking bacteria proliferation. Earth globosum is much more resistant to waterlogging than to Saccharomyces boulardii.