枣树后期果实主要病害及防治措施

• 作 者: 雷玲
• 机 构: 河北省赞皇县林业旅游局,
• 出 处: 河北果树
• 发表日期: 2016年01期
• 关键词: 正常着色 枣果 枣吊 枣树 果肉 枣头 枣叶 发病规律 褐色斑点 僵病

1炭疽病1.1症状枣果感病初期,在果肩或果腰出现褐色斑点,进而斑点扩大,呈黑色斑,斑外有淡黄色晕环,最后斑块中间产生圆形凹陷,病斑区果肉由淡绿转褐色,组织坏死。非感病区可正常着色。枣果感病后,生长量小、果肉糖分低、品质差、果肉味苦。1.2发病规律该病病原在枣头、枣股、枣吊、僵病果及枣叶上越冬,可随风雨或昆虫带菌传播。在5月中

1 anthracnose 1.1 Symptoms jujube fruit early onset, the fruit shoulder or waist appear brown spots, and then the spots to expand, black spots, spots with a yellow halo, the final plaque in the middle of a circular depression, the lesion area flesh From light green to brown, tissue necrosis. Non-susceptible area can be normal coloring. Jujube fruit after the disease, the growth of small, low flesh sugar, poor quality, flesh bitter taste. 1.2 The incidence of the disease pathogen in the jujube, jujube shares, jujube hanging, stiff fruit and jujube leaves on the winter, with the wind and rain or insect-borne bacteria. Mid May