[Objective] The paper aimed to study the control effects of live spore preparations of Trichoderma viride strains against vegetable grey mold in greenhouse. [Method] Trichoderma viride strains NW-411 live spore preparations were prepared by solid-state fermentation,106-107 spore/g diluent was made to conduct field control experiment,traits change of cucumber and tomato plants inoculated grey mold were investigated,control effect was calculated. [Result] Cucumber and tomato plants without dilution treatment of T. viride spores could be infected with different changes in trait. T. viride spore preparations had a significant preventive effect on greenhouse cucumber and tomato gray mold,the optimal concentration of spores was in the range of 2.3×10^6-2.3×10^7 spore/g. The incidence of cucumber and tomato plants were reduced to 4.2% and 3.1%,the incidence rate decreased 29.8% and 39.1% compared with plants without treatment,biological control effect was over 87%,and the plant growth can be enhanced obviously. [Conclusion] Live spores preparation of T. viride not only had a significant effect on grey mold,but also significantly enhanced the plants growth in greenhouse,which is a safety and environmental protection biological agent,and worthy to be widely spread in large-scale green vegetable production.
随着科技的不断发展,复合材料在各个领域的应用越来越广泛。然而诸如凯夫拉纤维、玻璃纤维、芳纶纤维等传统复合材料纤维存在环境友好性较低,可回收性较差等问题。在当前全球环保意识增强的大背景下,蚕丝这一天然纤维因其环境友好度高、强度大、韧性好等特点成为当下的研究热点。本文总结了天然纤维的应用,对其机械性能进行对比;从桑蚕丝、柞蚕丝的组成成分分别总结了各自的结构特点;最后对蚕丝纤维复合材料的应用前景进行综述。为作者下一阶段的研究找到突破点。With the continuous development of technology, the application of composite materials in various fields is becoming increasingly widespread. However, traditional composite fibers such as Kevlar fiber, glass fiber, aramid fiber, etc., have problems such as low environmental friendliness and poor recyclability. Against the backdrop of increasing global environmental awareness, silk, a natural fiber, has become a research hotspot due to its high environmental friendliness, strength, and toughness. This article summarizes the applications of natural fibers and compares their mechanical properties, and the structural characteristics of mulberry silk and pressed silk based on their respective components. Finally, a review is provided on the current research status of silk fiber composite materials, and a breakthrough point is found for the author’s next stage of research.
