摘要
以番茄品种"时研"为试材,研究滴灌频率和施氮量对番茄生长及氮代谢相关酶的影响。试验灌水定额1800 m^3/hm^2,设立高频灌溉W_1(2 d 1次)和低频灌溉W_2(10d 1次)2个灌溉频率,N_1(施纯氮360 kg/hm^2)和N_2(施纯氮600 kg/hm^2)2个施氮水平。结果表明,在相同施氮条件下,高频(W_1)较田间经验常用的低频(W_2)相比,株高、茎粗、果实产量分别平均增加10.7%、25.8%、20.6%,W_1N_1生长指标显著高于其他处理(P<0.05),产量达76840.05 kg/hm^2。适量施氮下,高频灌溉可促进番茄果实可溶性糖、有机酸、维生素C含量品质改善。叶片硝酸还原酶(NR)活性随生育进程呈双峰曲线变化,当灌溉频率一致时,N_1处理叶片的酶活性显著高于N_2。在座果期间,N_2比叶面积上升,随着氮肥的增加,番茄产量显著降低,建议新疆日光温室滴灌番茄施氮量为360 kg/hm^2,灌溉频率为2d 1次。
The tomato variety ＂ShiYan＂ was planted in the solar greenhouse. The aim of this study is to analyze the effectsof drip irrigation frequency and nitrogen application on the growth of tomatoes and the related enzymes of nitrogen metabolismuse tomato variety ＂ShiYan＂ as material. The irrigation quota was 1800m^3/hm^2, and there were two irrigation frequencies（once every two days, and once every ten days） as well as two nitrogen levels （360 and 600 kg/hm^2） established. The resultsdemonstrated that under same nitrogen applications, compared to the low frequency irrigation （W2） that was commonly used inthe field experience, the high frequency irrigation （W1） plant height increased stem diameter, fruit yield by an average of10.7%, 25.8%, and 20.6%, respectively. The growth index ofW1N1 was significantly higher than that of other treatments（P〈0.05）, and the yield reached 76,840.05 kg/hm^2. Under the appropriate amount of nitrogen, high frequency irrigation canpromote the quality of soluble sugar, organic acids, and vitamin C in tomatoes. The leaf nitrate reduction （NR） activitychanged alongside with the growth process of the bimodal curve; when the irrigation frequency was consistent,N1 wassignificantly higher thanN2. During the period of fruit, the specific leaf area inN2 treatment had a slight increase.Furthermore, with the amount of nitrogen increased, the yield of tomatoes decreased. It is recommended that the nitrogen levelin solar greenhouse drip irrigation is 360 kg/hm^2, and the irrigation frequency is once every two days.
作者
张筱茜
郭鹏飞
张坤
万文亮
刁明
Zhang Xiaoqian;Guo Pengfei;Zhang Kun;Wan Wenliang;Diao Ming(Department of Horticulture, College of Agronomy, Shihezi University/Xinjiang Production and Construction Corps Key Laboratoryof Special Fruits and Vegetables Cultivation Physiology and Germplasm Resources Utilization, Shihezi, Xinjiang 832003, China)
出处
《石河子大学学报（自然科学版）》
CAS
北大核心
2018年第1期57-62,共6页
Journal of Shihezi University(Natural Science)
基金
国家星火重点资助项目(2015GA891008)
国家自然科学基金项目(31360478)
关键词
灌溉频率
施氮量
比叶面积
产量
硝酸还原酶
irrigation frequency
nitrogen application
specific leaf area
yield
nitrate reductase
