论文部分内容阅读
2011—2012年对黄金梨铁头病的发病症状和发病规律进行观察,并对影响铁头病发生的梨园土壤类型、砧木种类、树龄、果实着生部位、叶面肥、果实套袋、激素等因素进行调查研究。认为黄金梨铁头病是果顶细胞发育障碍的生理性病害,其发病程度受综合因素的影响,果实套袋、氮肥过量、砧木不良、树冠郁闭、使用膨果素处理及树体缺硼、钙、硅等中、微量元素等均能加重铁头病的发生,并提出了相应的防治技术措施。
The incidence and incidence of iron pears head disease were observed from 2011 to 2012. The effects of iron head disease on the soil types, rootstock types, age, fruit bearing parts, foliar fertilizer, bagging of fruit, hormone Factors such as research. It is thought that the headache of Golden Pear is a physiological disease of the apical cell development disorder. The incidence of the disease is affected by a combination of factors such as bagging of fruit, excessive nitrogen fertilizer, poor rootstocks, canopy closure, , Calcium, silicon, etc., trace elements can aggravate the occurrence of iron head disease, and put forward the corresponding control measures.