论文部分内容阅读
生理性病害——番茄、甜椒脐腐病与果实中缺钙有关.为了探明空气相对湿度(RH)、基质条温度和湿度等环境因子对无土栽培甜椒脐腐病发生率的影响,进行了一系列试验.共设置了12种试验处理,包括提高空气相对湿度到60％、对照;基质条冷却至17℃、对照;基质条湿度设定为50％、60％、由定时器控制.结果表明,提高RH可明显缓和温室内RH和气温的日变化;显著增加果实中维管束数量,果实顶端和基部其维管束数量分别比对照温室的高14.6％和11.4％;可显著提高果实中的钙含量,其中果实顶端和基部分别比对照温室高19.9％和16.6％,从而降低脐腐病的发病率.果实和叶片中钾含量未受RH高低的影响.基质条冷却可提高根基氧含量,这有利于提高根系活力.RH、基质条温度和湿度这3种环境因子对甜椒脐腐病的发生率的影响有累积效应.但处理间果实数量和产量差异不显著.
Physiological diseases - The umbilicus disease of tomato and sweet pepper is related to calcium deficiency in fruit.In order to find out the effect of environmental factors such as air relative humidity (RH), substrate temperature and humidity on the incidence of umbilicus rot in soilless culture sweet pepper , A series of experiments were conducted. A total of 12 experimental treatments were set up, including increasing air relative humidity to 60%, control; cooling of substrate strip to 17 ° C, control; setting of substrate strip humidity to 50%, 60% The results showed that increasing RH could obviously reduce the diurnal variation of RH and temperature in greenhouse and significantly increase the number of vascular bundles in fruit and the number of vascular bundles at the top and base of fruit were 14.6% and 11.4% higher than those in control greenhouse respectively. The calcium content in the fruit, in which the top and bottom of the fruit were 19.9% and 16.6% higher than that of the control greenhouse respectively, reduced the incidence of umbilicus rot, and the potassium content in fruits and leaves was not affected by the level of RH. Oxygen content, which is conducive to improve the root activity.RH, substrate temperature and humidity of these three kinds of environmental factors have a cumulative effect on the incidence of sweet pepper umbilical rot, but there was no significant difference between the number of fruit and yield of the treatment.