摘要
本文研究了降雨对空气中浮游孢子携落率的计算问题,提出了根据降雨量(M)、持续降雨时间(H)来计算降雨对空气中浮游孢子携落率(Y)的公式;令D=1.24(M/H)^(0.182),则Y=1-EXP(-1.5M/D)。根据部分资料估计了真菌气传病害的空中浮游孢子与植物叶表附着孢子的比率(R)约为1～5:1,由此可推算因降雨对空气中浮游孢子的携落作用和对植物表面附着孢子的冲刷作用(冲刷率为W)的综合结果,使植物表面附着孢子数变为原来的(1+R·Y)(1-W)倍。
In this paper, the calculation of the rate od floating spores in the air falling associated with rainfall was studied. An equations was built as D= 1. 24(M/H)0-182, thus Y= 1 - EXP(- I. 5M/D) , where M(mm) and H(hr) respectively present the rainfall and duration of rainfall lasting. The tentative results showed that the rate(R) between the number of the spores floating in the air and adhering to the surface of plants was I - 5:1. Because the floating spores fell together with rainfall, the number of the spores on the surface of the plants increased to I +R * Y times as many as the former. When W Stands for the rate of washout spores from surface of plant. thus the sum number of spores on the surface of plant(s) was calculated by using the formula; S = (1+R* Y)(l-W).
出处
《吉林农业大学学报》
CAS
CSCD
1993年第4期1-5,共5页
Journal of Jilin Agricultural University
关键词
降雨
浮游孢子
携落率
植病流行
rain
rate of floating spores associated with rain
epidemic of the plant disease
