Effect of Trace Irrigation on Growth，Yield and Water Use Efficiency of Lettuce(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Title:: Effect of Trace Irrigation on Growth，Yield and Water Use Efficiency of Lettuce

Author(s):: ZHOU Ji-hua¹; WANG Zhi-ping¹; LIU Bao-wen²; 1.Beijing Agri Technical Extension Center，Beijing 100029；
2.Changping Agro Technical Extension Station，Beijing 102200

Abstract:: Taking lettuce ‘Beijing 101’ and ‘Emperor’ as materials,using conventional and reduced rate of drip irrigation as control，the effects of first generation trace irrigation system on growth，yield and water use efficiency of lettuce were studied.The results showed that plant height，leave weight of out layers and dry weight per plant of lettuce could not be affected by the trace irrigation treatment.Fresh and dry root weight，economic yield and biomass weight above ground were the highest under the conventional drip irrigation treatment，however，there was no significant difference between conventional drip irrigation treatment and trace irrigation treatment.Water use efficiency in low trace irrigation treatment could increased by 8.2~30.7 kg/m³compared with the other treatments.

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Last Update: 2014-08-08