柑桔溃疡病发病程度对落叶、落果、果实大小及品质的影响

THE EFFECT OF CITRUS CANKER ON LEAF FALL,FRUIT DROP,SIZE AND QUALITY OF FRUIT

雪柑叶片、果实溃疡病各病级的落叶率或落果率均随病级的增大而上升;而果实的大小和品质则随病级的增大而下降。除1级的落叶率、落果率、果实大小及品质与0级无显著差异外、其他各级均造成不同程度的大量落叶、落果、和果实变小品质变劣。探明病情指数与落叶、落果、果实大小及品质的关系,并分别建立回归模型。

The Percentage of Citrus elaf fall and fruit drop incveald witg the dixe-are inelex.The efhects on The fuict wene the Smaller lize,and inferior fual-ity.When the index exceedecl one the above mentioned situation coould deve-lgo more Seriously Several regression models were suggested according to thedisease indices with the reaction of leaves and fruits.