| Study on tomato drip irrigation scheduling in solar greenhouse based on water surface evaporation of a 20 cm standard pan |
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| DOI：10.7606/j.issn.1000-7601.2011.05.24 |
| Key Words: solar greenhouse tomato pan evaporation drip yield irrigation water use efficiency |
| Author Name | Affiliation | | JIAO Yanping | Hebei Provincial Academy of Water Resources, Shijiazhuang, Hebei 050057, China | | ZHAO Yong | Hebei Provincial Academy of Water Resources, Shijiazhuang, Hebei 050057, China | | ZHANG Yanhong | Hebei Provincial Academy of Water Resources, Shijiazhuang, Hebei 050057, China | | ZHENG Chenghai | Semi-arid Agriculture Engineering and Technology Research Center of china, Shijiazhuang, Hebei 050051, China |
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| Abstract: |
| Based on the irrigation interval of 2 days, this study was conducted to evaluate the effects of different pan coefficient (Kcp=0.4，0.6，0.8和1.0）on the growth and irrigation water use efficiency of tomato under mulch drip irrigation in solar greenhouse in 2010. Irrigation amount were detemined by water surface evaporation(Ep) measured by a standard 0.2 m diameter pan. The results showed that the plant height，LAI and SPAD reading of tomatoes all increased with the increasing of irrigation amount. The higher irrigation amount lead to the increase of fruit yields, but the highest irrigation water use efficiency were a
chieved with the pan coefficient of 0.4. The content of the vitamin C decreased with the increasing of irrrigation amount. The sugar content of the fruit had nothing to do with the irrigation amount. From the viewpoint of high yield, good fruit quality and water saving, the pan coefficient of 0.8 should be suggested as a guideline to irrigate tomatoes in solar greenhouse. |
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