亚麻炭疽病发生规律的研究

摘要

The occurrence regularity of flax anthraconose was analyzed from the aspects of different sowing density, fertilization, alternate cropping and so on. It's clear that the higher sowing density is, the more seriously flax anthracnose happens. Infection rate of the anthracnose is increased because of surplus nitrogen, meanwhile, it is decreased by using nitrogen, phosphorus and postassium fairly. High soil moisture and alternate cropping also cause the occurrence of flax anthracnose. The longer time of alternate cropping is, the more seriously flax anthracnose happens.%从亚麻不同播种密度、施不同肥料及重迎茬等条件,分析亚麻炭疽病发生规律.明确了播种密度越大,炭疽病发生越严重;过剩的氮素增加亚麻炭疽病感染率,而氮、磷、钾合理搭配施用,有利于减轻亚麻炭疽病的发生;土壤湿度越大亚麻炭疽病发生越严重;亚麻重迎茬可使炭疽病加重,重茬年限越久发病就越严重.