ELECTRON MICROGRAPH OF PYTHIUM CELL WALL PITTING CAUSED BY TRICHODERMA HARZIANUM. ■微生物防治机制： 溶菌作用(1ysis) 25KU 6日 0208 1 OU AGRICELECTRON MICROGRAPH OF PYTHIUM CELL WALL PITTING CAUSED BY TRICHODERMA HARZIANUM. ◼微生物防治机制： ◼溶菌作用(1ysis)