| 钾对大白菜软腐病发生及保护酶活性的影响 |
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| 引用本文： | 王文峰,张秀玲,司东霞,任爱芝,李海云.钾对大白菜软腐病发生及保护酶活性的影响[J].安徽农业科学,2017,45(33). |
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| 作者姓名： | 王文峰 张秀玲 司东霞 任爱芝 李海云 |
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| 作者单位： | 聊城大学农学院,山东聊城,252059;聊城大学农学院,山东聊城,252059;聊城大学农学院,山东聊城,252059;聊城大学农学院,山东聊城,252059;聊城大学农学院,山东聊城,252059 |
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| 基金项目： | 农业部公益性行业(农业)科研专项，山东省高等学校科技计划项目，聊城大学文化创新基金项目 |
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| 摘 要： | 目的]探究钾肥在抗大白菜软腐病中的作用。方法]以德高秋丰王和北京新三号为试验材料,通过大田试验,研究3个施钾水平下(0、200、400 kg/hm~2K_2O)德高秋丰王和北京新三号大白菜产量、软腐病发病率及保护酶活性的变化。结果]施钾量为200 kg/hm~2时显著提高德高秋丰王的产量,而北京新三号产量在施钾量达到400 kg/hm2时显著提高;随施钾量的提高,两品种大白菜软腐病病情指数都呈现降低的趋势,施钾量在400 kg/hm~2时,病情指数最低;两品种的PPO和POD的活性都随施钾量的提高而增强。结论]施钾对大白菜产量的效应因品种不同而异,增施钾肥可以通过提高保护酶的活性降低大白菜软腐病病情指数。
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| 关 键 词： | 大白菜 软腐病 钾 保护酶 |
Effects of Potassium on Soft Rot Incidence and Defense Enzyme Activity in Chinese Cabbage |
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| WANG Wen-feng,ZHANG Xiu-ling,SI Dong-xia,Ren Ai-zhi,LI Hai-yun.Effects of Potassium on Soft Rot Incidence and Defense Enzyme Activity in Chinese Cabbage[J].Journal of Anhui Agricultural Sciences,2017,45(33). |
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| Authors: | WANG Wen-feng ZHANG Xiu-ling SI Dong-xia Ren Ai-zhi LI Hai-yun |
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| Abstract: | Objective] To study effects of potassium on the resistance to soft rot of Chinese Cabbage. Method ] Degaoqiufengwang and Bei-jingxinsanhao were used as the test materials,effects of three different potassium (0 kg/hm2 ,200 kg/hm2 and 400 kg/hm2 ) on the yield,soft rot incidence and change of protective enzyme activity in Chinese cabbage were studied using field experiment. Result] Yield of Degaoqiufengwang increased significantly when the amount of potassium applied was 200 kg/hm2 ,but the yield of Beijingxinsanhao increased significantly when the amount of potassium applied was 400 kg/hm2 .With the increase of potassium application,the disease index of soft rot in both two varieties of Chi-nese cabbage showed a downward trend,and the disease index was the lowest when amount of potassium applied at 400 kg/hm2 .The activities of PPO and POD in both varieties increased with the increase of potassium application amount. Conclusion] The effect of potassium on the yield of China cabbage varies by variety,application of potassium could reduce the disease index of soft rot in China cabbage through improving the activi-ty of protective enzymes. |
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| Keywords: | Chinese cabbage Soft rot Potassium Protective enzymes |
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