枸杞病害的防治１、灰斑病也叫叶斑病，是一种真菌引起的病害。叶片上病斑圆形，直径２～４毫米，病斑边缘绿褐色，中部灰白色。叶背面有浅黑色霉状物。防治：①及时清除病枝落叶，将其烧掉或深埋。②增施腐熟的农家肥，以增强抗病力。③病初施药：用５０％多菌灵５００倍... Goji disease prevention and control 1, gray spot disease, also known as leaf spot, is a disease caused by fungi. The leaf spot on the leaves is round, with a diameter of 2 to 4 mm. The edge of the lesion is greenish-brown and the middle is off-white. There are light black moldy material on the back of leaves. Prevention: ① timely removal of diseased leaves, burned or buried. ② increasing maturity of manure to enhance disease resistance. ③ sick early application: with 50% carbendazim 500 times ...