摘要
研究了土层置换及土壤灭菌措施对马铃薯叶片酶活性的影响。结果表明,土层置换或土壤灭菌处理提高了马铃薯叶片中保护酶(超氧化物歧化酶、过氧化物酶和过氧化氢酶)的活性,降低了叶片中纤维素酶和蛋白酶的活性,提高了马铃薯对晚疫病的抵抗能力。土层置换和土壤灭菌处理可以消除马铃薯由于连作障碍而产生的晚疫病的发病率,其中增施磷肥15%且置换土壤(T2)与施杀菌灵且不置换土壤(H)处理在消除马铃薯由于连作而产生的晚疫病方面效果最佳。而土壤经过土壤置换并加有机肥处理后(T3处理),马铃薯的晚疫病的病情指数在整个马铃薯的生长期内都显著高于其他4个处理,在77 d时分别比CK、T1(置换土壤)、T2和H 4个处理高出17.5%、47.1%、60.8%和66.6%,表明在土壤置换后使用有机肥不利于降低马铃薯的晚疫病。
The analysis of the effects of soil displacement and soil sterilization measures on enzyme activity in leaves of potato, and provide the technical support of sciencefor the elimination of potato continuous cropping obstacle was reaseached. The results showed that soil replacement or soil sterilization treatment increased the activity of protective enzyme in potato leaves （superoxide dismutase, peroxidase and catalase）, and reduced the activity of cellulase and protease, which improved the resistance of potato to late blight. Soil replacement and soil sterilization treatment eliminates the potato late blight caused by continuous cropping obstacles incidence,and Phasphate 15% and the replacement of soil （T2） and Application of soil fungicide antiseptic spirit and no replacement of soil （H） treatment in eliminating due to continuous cropping potato late blightbest effect. But the soil through？soil replacement and add organic fertilizer after treatment （T3 treatment）, the disease index of potato late blight of potato during the growing period of the whole inner were significantly higher than the other four treatments,and the replacement of soil （T1）,T2 and H treatment was 17.5%,47.1%,60.8% and 66.6% higher than the CK in 77 days respectively,which showed that the use of organic manure was not conducive to the reduction of potato late blight in soil after replacement.
出处
《湖北农业科学》
2015年第21期5281-5284,5290,共5页
Hubei Agricultural Sciences
基金
公益性行业(农业)科研专项(201303126)
农村领域国家科技计划资助项目(2012BAD06B00)
