| Effects of straw mulch and irrigation on growth and water use efficiency of Lycium |
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| DOI：10.7606/j.issn.1000-7601.2013.03.09 |
| Key Words: Lycium irrigation quantity staw mulch growth yield water use efficiency |
| Author Name | Affiliation | | ZENG Xiaochun | School of Engineering, Gansu Agricultural University, Lanzhou,Gansu 730070, China | | LI Weihua | Yellow River Engineering Consulting Co., Ltd., Zhengzhou, Henan 450003, China | | QIANG Shengcai | Key Lab of Agricultural Soil and Water Engineering in Arid and Semiarid Areas, Ministry of Education, Northwest A & F University, Yangling, Shaanxi 712100, China | | PAN Jumei | School of Engineering, Gansu Agricultural University, Lanzhou,Gansu 730070, China | | ZHANG Yunliang | School of Engineering, Gansu Agricultural University, Lanzhou,Gansu 730070, China | | QI Guangping | School of Engineering, Gansu Agricultural University, Lanzhou,Gansu 730070, China |
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| Abstract: |
| In order to determine a suitable irrigation mode for Lycium in Yellow River irrigation area, four treat-ments of straw mulching and irrigation were tested on Lycium of three-year old, Ningqi 1,in Jingtai yujie plantation. CK as control, had no straw mulch coverage with an irrigation quota of 7 840 m3·hm-2.T1 to T3 treatment had straw mulch, and irrigation quota were7 840 m3·hm-2, 6 270 m3·hm-2, and 4 705m3·hm-2 respectively. Shoot growth, water consumption, yield, and water use efficieney were measured and calculated. The results showed that:(1)Lycium shoot growth increased with rise of irrigation quota, shoot growth of Lycium in T1 treatment was signifieantly higher(P<0.05)than in other treatments. There no significant difference between CK and T3(P>0.05);(2)There were no positive correlation between irrigation quota and dried Lycium production. The order of Lycium yield with different treat-ments was T2>T1>CK>T3. T2 treatment gained the highest yield, reached 5 168.39 kg·hm-2;(3)T2 treatment gained the highest water use efficiency, which was 4.61 kg·mm-1·hm-2. Compared to CK、T1 and T3 treatment, water
use efficiency was increased 52.6%, 24.7%and 25.4%, respectively.(4)Water consumption in T2 treatment reached 1 121.36 mm, which was significant lower than in CK and T1 treatment; In conclusion,T2 treatment, straw mulch combined with the irrigation quota of 6 270 m3·hm-2, was the best mode for enhance the Lycium yield and for water-saving irrigation. |
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