【作者】 李建国； 许建楷； 邹和清； 施银水；

【Author】 Li Jianguo,Xu Jianjie, Zou Heqing, and Shi Yinshui (Dept. , Horti. , South China Agricultural University, Guangzhou 510642)

【机构】 华南农业大学园艺系； 广东省杨村华侨柑橘场石坝分场；

【摘要】 在广东省四个地区的不同果园经过4年的调查和研究发现:红江橙大量裂果发生在果实转色后的成熟期,以树冠中部、内膛及荫蔽处最严重:裂口的形状以纵向为主,多数出现在果实的向阴面;不同地点、不同年份间裂果发生程度差异很大;树体的挂果量与裂果率呈极显著的负相关。试验表明:环割和叶面喷施防裂素可显著减轻裂果。更多还原

【Abstract】 In the present studies, occurence of fruit-cracking in Hongjiang sweet orange was monitored during years of 1990-1993 and its control measures were tested. The results indicated that high incidence of fruit-cracking was in the ripening period, and severe cracking was seen in the midst of the canopies and under the shade of foliage. Longitudinal cracking on the shaded half of fruits seemed to be more frequent. Percentage of cracked friuts varied neatly with different year and orchard sites. A significantly negative correlation was established between crop-load and cracked fruit percentage. Effective measures to reducing fruit-cracking were shown to be girlding and sprays with calcium and more plant growth regulators.更多还原