研究300、400、500、600、700倍稀释液10％大蒜素微乳剂对西瓜炭疽病的防治作用,室内药效和盆栽药效试验结果表明:不同倍数稀释液10％大蒜素微乳剂处理对西瓜炭疽病均有一定的防治效果,室内菌丝生长速率法测定其对西瓜炭疽病菌的抑制率分别为89.80％、76.00％、61.03％、51.63％、14.97％;室内离体叶片接菌鉴定其抑制率分别为81.81％、64.02％、59.10％、51.14％、1.82％;盆栽接种的防治效果分别为91.17％、75.72％、61.68％、43.53％、4.56％.由此可见,生产上使用10％大蒜素微乳剂300～500倍液能有效控制西瓜炭疽病害蔓延发展.

Twenty-four bacteria and 8 fungi were isolated from 8 different kind industrial producing sprouts.Molecular identification showed that these 24 bacteria belong to 8 genus(Klebsiella,Enterobacter, Pseudomonas,Acinetobacter,Pectobacterium,Empedobacter,Delftia and Comamonas),and were all G-,and 7 of them were not typical plant pathogen,except Pectobacterium.Four genus(Acinetobacter, Enterobacter,Klebsiella and Pseudomonas)were isolated from 2 or over 2 sprouts,and the other 4 genus were only isolated from one kind sprout.The result implied that there was host specialization in these bacteria. Eight fungi belong to 3 genus(Fusarium,Alternaria and Rhizopus).Fungi isolated from the other 6 sprouts all belong to Fusarium,Alternaria and Rhizopus fungi were only isolated from water spinach and radish sprout, respectively.The water spinach and radish sprouts showed different rot symptoms after inoculated by 4 bacteria, and the black soya bean sprouts showed different rot symptoms after inoculated by 3 fungi.These results indicated that microorganism from environment during production process could also cause sprout diseases.

Taking eggplant seedlings under the low temperature condition as materials,the paper studied the effects of ABA,SA and CaC12 with different concentrations on the cell membrane system of eggplant.The results showed that,after spraying the exogenous chemical substances,the chilling injury index decreased significantly,the relative electric conductivity and content of plasma membrane exudate reduced obviously,the potential and ATPases activity of chloroplast and thylakoid membranes increased,alleviating the damage of cold stress to the cell membrane.And 10 mg·L-1 ABA,300 mg·L-1 SA and 1 000 mg·L-1 CaC12 possessed the best effects respectively.