Warning: file_exists(): open_basedir restriction in effect. File(/www/wwwroot/www.baicaodaquan.com/cache/tagcache/pingguo2/0_pingguo2_0.data) is not within the allowed path(s): (/www/web/www.baicaodaquan.com/:/tmp/) in /www/web/www.baicaodaquan.com/e/dongpo/itag/dp_cache.php on line 88
苹果 - 植物百科_百草大全

什么是苹果树干枯病,与枝枯病有何区别?

苹果树干枯病也是苹果上一种较常见的枝干病害,其主要为害定植不久的幼树,发病处多在地面以上10~30厘米的主干或丫杈处。发病初期,病部产生长椭圆形暗褐色病斑,有规则轮纹,后病斑逐
2023-12-03