Irrigation Schedule of Greenhouse Tomato Using Pan Evaporation and Tensiometer and Effects on Yield and Soil Nitrate

Abstract:

Over-application of nitrogen is widespread in greenhouse vegetable production in China and induces environmental problems. The nitrogen leaching lose from unsuitable irrigation has proved to be the bottleneck of reducing nitrogen application, and timely and adequate irrigation so became one of the key countermeasures for reduction of nitrogen application. This experiment was conducted to schedule irrigation with tensiometers and pan evaporation, probing the effects of that on tomato (Lycopersicon esculentum Mill) fruit yield and soil nitrate. The results show that i) when Kcp=1.2, tomato obtain high yield while Kcp=0.4 or 0.8, the corresponding irrigation cannot meet plant need for water and lead to yield reduction, and ii) comparing with conventional irrigation, pan-evaporation-based irrigation schedules significantly reduce the amount of irrigation water to deeper soil layers, thereby limiting nutrient in soil solution downward, which results in much lower NO₃-N content in subsoil and greatly mitigate the risk of nitrate leaching loss.

• Periodical: Advanced Materials Research (Volumes 864-867)
• Pages: 2498-2502
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.864-867.2498
• Online since: December 2013
• Authors: Hua He*, Jun Liang Li
• Keywords: Greenhouse Tomato, Irrigation Schedule, Pan Evaporation, Soil Nitrate, Tensiometer

References

[1] Feifei He. Studies on optimizing nitrogen management and environmental implication in greenhouse tomato cropping system [D]. Beijing: China Agricultural University, 2006. (in Chinese).

[2] Junliang Li, Jianhua Zhu, Xiaosheng Zhang. Chin. J. Appl. Environ. Biol. ，2001, 7( 2) : 126~ 129 (in Chinese).

[3] W. L. Zhang, Z. X. Tian, N. Zhang, X.Q. Li. . Agriculture, Ecosystems & Environment, 1996, 59( 3) : 223~231.

[4] Xiaotang Ju, Xuejun Liu, Fusuo Zhang, Marco Roelcke. Ambio A Journal o f the Human Environment, 2004, 33( 6) : 300~305.

[5] Tingxuan Li, Jianmin Zhou, Zengqiang Duan, Haiying Yu. Journal of Soil and Water Conservation, 2005, 19(4): 70~75. (in Chinese).

[6] Liling Tang, Qing Chen, Hongyan Zhang. Plant Nutrition and Fertilizer Science，2002, 8( 3) : 282~ 287(in Chinese).

[7] Bin Cao, Fayun He, Qiuming Xu, Guixin Cai. Chin.J. App;. Ecol., 2006, 17(10): 1839~1844 (in Chinese).

[8] Townsend M A, Sleezer R O, Macko S A. Water Science Techno log y, 1996, 33: 219~226.

[9] Shengli Guo, Jinshui Wu, Mingde Hao, Tinghui Dang. Chinese journal of applied ecology, 2003, 14( 1) : 75~78(in Chinese).

[10] T horburn P J, Bigg s J S, Weier K L. Agriculture, Ecosystems & Environment, 2003, 94: 49~58.

[11] Yaohu Kang. water saving irrigation. 2004, (3) : 11~12, 15(in Chinese).

[12] Hansen V E, Israelsen O W, Stringham G E. Irrigation Principles and Practices[ M] . Fourth ed. New York: Wiley, (1980).

[13] Elliades G. J Horti Sci, 1988, 63( 2) : 235 ~239.

[14] Baozhong Yuan, Yaohu Kang, Soichi Nishiyama. Irrig. Sci, 2001, 20: 149~ 154.