落叶松幼苗早期封顶病在阿勒泰地区各林场都不同程度的存在,主要症状是在苗木出土后,苗高约3～7厘米左右(真叶四五轮)时突然停止高生长,对落叶松的生长带来极大危害。本人在实际工作中经过实验探索总结出下列防治方法,对落叶松幼苗早期封顶病具有良好的防治效果。1严把落叶松种 Early larch seedling cap disease in the Altay region all forest farms have varying degrees of existence, the main symptom is the emergence of seedlings, the height of about 3 to 7 cm (true leaves 45 rounds) suddenly stop the high growth of larch Growth has brought great harm. I in the actual work through experiments to explore and sum up the following methods of prevention and treatment of larch seedling early cap disease has a good control effect. 1 strictly larch species