摘要
水稻潜根线虫(Hirschmaniella oryzae)的致死温度为51°C10分钟。在零下的低温,该线虫最多只能存活30小时,但它能在水稻生长受抑制的温度(40。C)下生活1个月左右。该线虫耐水淹而不耐干燥,在5—32°C的室温散光条件下,浸在无菌水中的线虫可以存活185—240天,但在室内(湿度为70—85%)自然凉干后,最多只能存活84小时。该线虫对酸碱度的适应性非常广,在水稻无法生存的pH2.2和pH12.4的缓冲液中都可以分别存活10—15天和20—30天。紫外光和直射阳光对该线虫有强烈的杀死作用,在20W的紫外灯下(灯距25cm)照射60分钟或在4—8万Lux的太阳光下照射2天,可以将线虫全部杀死。220V或15000V高压,对该线虫都无击伤作用。
The fatal temperature of Hirschmanniella oryzae are 51℃,10 minutes. Below 0℃ these Hirschmam.iella oryzae could survive 30 hours only, but they could live at 40℃ one month. When the growth of rices had been suppressed, Hirschmanniella oryzae could endure the immergency of water, but could not endure dry, Hirschmanniella oryzae could live 185-240 days,at the room temperature 5-32℃, disperse light, and immersing in the water, but after airing in room condition (humidity 70-85%) they could only live 84 hours only. Rices could not survive at pH 2.2 and 12.4 buffer solution, but Hirschmanniella oryzae could survive 10-15 days and 20-30 days respectively. Ultraviolet light and solar radiation could kill Hirschmanniella oryzae easily, under 20W ultraviolet lamp, exposing 60 seconds or under 40-80 thousands Lux direct solar radiation exposing 2 days, could kill all Hirschmanniella oryzae, but 220V or 15000V high-voltage could not hurt them.
出处
《植物病理学报》
CAS
CSCD
北大核心
1990年第1期21-23,共3页
Acta Phytopathologica Sinica
