如何防止化肥引起的果树烂根

• 作 者: 邓广军
• 出 处: 农家参谋
• 发表日期: 2005年10期
• 关键词: 施肥沟 生理酸性肥料 果园土壤 果树根系 树根 根茎部 根茎 须根 梢部 侧枝

一、症状施用化肥过量,果树须根和细根变红褐色并逐渐腐烂,主根皮层变褐色坏死。坏死皮层多沿根茎部向上扩展到主干、主枝、侧枝以至梢部,与健康皮层交界处明显,常呈带状。严重的可使果树整株枯死。二、发生原因将过量化肥埋于树根附近,或施肥沟离根茎太近,或施用液体肥料的浓

First, the symptoms of excessive use of fertilizer, fruit trees and fine roots become reddish brown and gradually decay, the main cortex brown necrosis. The necrotic cortex extends up to the trunk, main branch, collateral branches and even the tip along the rhizomes, and the junction with the healthy cortex is obvious and often has a ribbon shape. Serious can make whole fruit tree dead. Second, the reasons for the excessive fertilizer buried in the roots near, or fertilizer ditch too close to the rhizome, or the application of liquid fertilizer thick