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時(shí)下園林樹(shù)木病蟲(chóng)害～以鉆石海棠為主

小強(qiáng)

<h3>蚜蟲(chóng)與結(jié)繭七星瓢蟲(chóng)～北美鉆石海棠</h3> <h3>七星瓢蟲(chóng)幼蟲(chóng)尋找蚜蟲(chóng)～元寶楓</h3> <h3>多星瓢蟲(chóng)</h3> <h3>多星瓢蟲(chóng)幼蟲(chóng)</h3> <h3>紅蜘蛛～葉面出現(xiàn)失綠斑點(diǎn)，背面一定有紅蜘蛛，針尖大的紅色小小蟲(chóng)子</h3> <h3>吃蚜蟲(chóng)的七星瓢蟲(chóng)與吃樹(shù)干的蚧殼蟲(chóng)</h3> <h3>七星瓢蟲(chóng)結(jié)繭</h3> <h3>瓢蟲(chóng)結(jié)繭卷葉</h3> <h3>蚧殼蟲(chóng)～往年危害樹(shù)干痕跡</h3> <h3>蚧殼蟲(chóng)～外殼</h3> <h3>球堅(jiān)蚧 蚧殼蟲(chóng)附著樹(shù)干 葉面有銹病斑點(diǎn)</h3> <h3>榆葉梅蚜蟲(chóng)</h3> <h3>銹病～清明沒(méi)有打藥預(yù)防，會(huì)很普遍</h3> <h3>海棠黃色斑點(diǎn)～～銹病</h3> <h3>榆樹(shù)蚜蟲(chóng)</h3> <h3>榆樹(shù)樹(shù)洞</h3> <h3>油松～因病蟲(chóng)害、地面鋪裝導(dǎo)致的土壤透氣性差。樹(shù)勢(shì)枯弱。</h3> <h3>白皮松～松球芽危害，地面綠籬和草坪，土壤過(guò)濕不透氣，樹(shù)勢(shì)枯弱。</h3> <h3>草履蚧～梨樹(shù) 碧桃 白蠟樹(shù) 普通藥劑不能很好的滲透蟲(chóng)體皮層。</h3> <h3>元寶楓 ～天牛蛀干蟲(chóng)孔</h3> <h3>元寶楓蛀干推出的木屑</h3> <h3>黃楊絹野螟～4月初開(kāi)始出現(xiàn)，陸續(xù)危害，啃食小葉綠籬迅速，一經(jīng)發(fā)現(xiàn) 及時(shí)打藥。</h3> <h3>榆葉梅 碧桃等嫩梢卷葉～蚜蟲(chóng)</h3>