欢迎访问《中国农学通报》,

中国农学通报 ›› 2016, Vol. 32 ›› Issue (25): 44-51.doi: 10.11924/j.issn.1000-6850.casb16050123

所属专题: 园艺

• 林学 园艺 园林 • 上一篇    下一篇

沙漠绿洲隔沟交替灌溉辣椒的耗水特征及作物系数研究

韩国君,黄海霞,褚润,马乐元,张勤虎,张冰桥   

  1. 甘肃农业大学资源与环境学院,甘肃农业大学林学院,甘肃农业大学资源与环境学院,甘肃农业大学资源与环境学院,甘肃农业大学资源与环境学院,甘肃农业大学资源与环境学院
  • 收稿日期:2016-05-20 修回日期:2016-07-03 接受日期:2016-07-22 出版日期:2016-08-29 发布日期:2016-08-29
  • 通讯作者: 韩国君
  • 基金资助:
    甘肃省高等学校基本科研业务费专项资金项目“酿酒葡萄分根区交替灌溉的调控及节水机理”(037-041015);甘肃省高等学校科研项目“根系分区交替灌溉作物的光合生理特性及节水效应研究”(2015A-076)。

Water Consumption and Crop Coefficient of Pepper by Alternative Irrigation in Desert Oasis

马乐元,张勤虎 and   

  • Received:2016-05-20 Revised:2016-07-03 Accepted:2016-07-22 Online:2016-08-29 Published:2016-08-29

摘要: 为研究交替灌溉条件下辣椒的作物系数及土壤水分变化,用水量平衡法测定辣椒各生育期耗水量及土壤水分动态,实测得到辣椒各生育期的作物系数,并将作物系数与辣椒叶面积指数回归分析,研究隔沟交替灌溉辣椒各生育期的耗水特征及作物系数。结果表明,辣椒结果盛期是耗水量最大的时期,在辣椒定植—坐果期和结果末期交替灌溉处理作物的总耗水量与对照无显著差异,但结果盛期交替灌溉的总耗水量显著减少。辣椒交替灌溉下0~60 cm土层是土壤含水量变化活跃层。交替灌溉对辣椒的作物系数有显著影响,且随亏水程度的增大作物系数减小,‘美国红’的作物系数小于‘陇椒2号’。辣椒叶面积指数与作物系数呈显著的线性正相关。

关键词: 火龙果, 火龙果, 白肉, 选育

Abstract: The objective of this study is to assess the crop coefficient of pepper and the soil moisture variations under alternative irrigation. Intensive study of water use efficiency and water balance of crops in desert oasis were contributed to the water-saving irrigation of agricultural ecosystem and sustainable utilization of water resources. Pepper was widely planted in desert oasis of northwestern regions. It was studied in this paper about water consumption characteristics and crop coefficient of irrigated pepper among different growth stages, quantified the inner relationships between water consumption and soil water dynamics based on water balance method, and analyzed regression relationships between pepper crop coefficient and leaf area index of growth period. Results showed that mild water deficit during planting-fruit setting stage and alternative irrigation during late fruiting stage had no significant effects on crop total water consumption. Water consumption is the largest in middle fruiting stage. Crop coefficient of pepper was significantly influenced by alternative irrigation. Crop coefficient of ‘Longjiao No.2’ was higher than that of the ‘Meiguohong’. There was a significant positive linear correlation between crop coefficient and pepper leaf area index.

中图分类号: