本论文对百合ppo的特性、百合贮藏中褐变度和PPO活性的变化进行了研究并筛选出了防褐变药剂。
By researching in the properties of PPO from lily, the Browning degree during storage and PPO activities from lily, this article have stating these and also selected some anti-browning medicaments.
巯基乙酸钠中两个极性基团一COOH及—SH具有同硫化矿强烈反应的特性，是代替氰化钠抑杂的理想药剂。
COOH and -SH two polar groups in mercaptoacetic sodium acid have properties of strong reaction to sulphide ores. It is the most satisfactory agent for replacing sodium cyanide to suppress impurities.
为有效防治易门地区危害渐趋严重的苹果棉蚜，开展了该虫害危害特性以及药剂防治的研究。
In order to control Eriosoma lanigerum in Yuxi effectively, the experiment on the harm characteristics and chemical control was conducted.
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