早防西瓜蔓枯病_鲁淑.pdf
1: 1: j S/ /2019 M /4 /6 / 003 *( jh Z =1v ( , jh ,1VC ) 7 ,2“ ,7= Y?h b3YV , ,=1v (v , i = A , = s y , ) A v , s jhh ) S b B+ ,=1v ( V |/n h jh? 3 ,E = a( hb = A =1 H aFvY , = Ab( , 22j25, % 25j28,( 30j35b E L H , V 7 g) , AFvb , j H V| g =vt ,E L ,ir Lb a H0 ?h i ,yp P 70% V Ax4 700 A 70%J ; )2 V Ax4 500A ,i bX?h , V 32.5%&Jc )4 1500A b