【摘要】 通过对盆栽国槐幼树叶片主要生理指标的测定和国槐行道树夏季落叶状况的系统调查 ,认为造成夏季落叶的主要原因是由于遭受截形叶螨的猖獗危害更多还原

【Abstract】 Chinese scholartree were an ideal trees for greening street in many North cities in China.For many years, the Chinese Shcolartrees have been falling leaves in summer, it not only influenced the appearance of the city,but also damaged the trees′ growth.The researchers determined the main physiological index by comtrast experiments of potted plant and investigated systematically the conditions of the leaf falling.The result indicated that the main reason that caused leaf falling of Chinese scholartrees in summer was spider mite′s damage.更多还原