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- Title
不同灌水量条件下苹果树茎流变化规律及其影响因素.
- Authors
张碧云; 程平; 李宏; 武胜利; 张志刚
- Abstract
To analyeze the sap flow change rules of apple trees under different irrigations amounts (single irrigation quota 99.0, 148.5 and 198 m³·hm-2, which were respectively marked as W1, W2 and W3) and the influence of meteorological factors on it in Aksu area, red apple trees (red love 119/06) was used as materials, sap flow rate of the apple trees were continuously observed by TDP contact-pin sap flow meter from June to September in 2020, and HOBO small meteorological station was used to automatically acquire the meteorological data. The results showed that the sap flow rate of apple trees under different irrigation amounts present a variation trend that were higher at daytime and lower at night, and the changes of sap flow rate at night were stable. The order of average daily sap flow rate of apple tress was W3>W2>W1. Air temperature, solar radiation and vapor pressure defict difference were the key factors affecting sap flow rate on the instantaneous time scale, 50 cm soil volumetric moisture content had a significant effect on sap flow rate at daily scale. Proper reduction of irrigation water was beneficial for the improvement of irrigation water productivity, increasing the total content of sugar and vitamin C, as well as reducing the total acid content. The irrigation amount disposed by W2 was more suitable for the irrigation of apple trees in the research area. The sap flow rate of apple trees was higher in July and August, the transpiration water consumption was high in this period, irrigation should be carried out timely, and the best irrigation should be before sunrise or after sunset.
- Subjects
IRRIGATION water; VAPOR pressure; RADIATION pressure; METEOROLOGICAL stations; SOLAR radiation
- Publication
Acta Agriculturae Zhejiangensis, 2022, Vol 34, Issue 4, p736
- ISSN
1004-1524
- Publication type
Article
- DOI
10.3969/j.issn.1004-1524.2022.04.10