早春蔬菜育苗期猝倒病的防治

1: 1: S/ /2017 M /2 /8 / 002 *= v h 3 h *= v 1hB?h R Ob hnh a b 5 Av Hh 5 3 ) b S? +? = b Nh j048b 1. 5 4_a pa/ Zy 5 SBv B r 5z 1 z d 4 z g5rb5r Z 3j5 Xo sB|p 3000j4000 A obv f /1Y A9 RV n H91 p seb 4.04 5?Ch H# H“ !rb 0i s=| 600j800A 9b9 V 72.2% X 4 600Aa 75% ) b 600A 1 5j7? 1QB1 3j5Qb