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| DOI：10.13522/j.cnki.ggps.2017.0186 |
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| Effects of Full-film Mulching Flat and Raised-bed Cultivation on Physiological Traits and Yield of Millet |
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ZHANG Xinglong, LI Zhixin, WANG Zongkai, MA Bin, XU Chang, SUN Mengyuan, LIU Jinghui
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College of Agronomy, Inner Mongolia Agricultural University, Huhhot 010019, China
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| Abstract: |
| 【Objective】 The combination of film mulch with raised-bed cultivation have proven to be an efficient rainwater-saving practice for growing staple crops in semiarid loess plateau, while only limited efforts had been made to examine the physiological and economic effects of such techniques on millet production [Setaria italica (L.) Beaur V.]. The purpose of this paper is to fill this gap. 【Method】 A two-year experiment was conducted from 2015 to 2016 at the Semiarid Qingshuihe Station in Inner Mongolia to investigate the effect of different types of film mulching and cultivations on soil water, morphological and physiological traits as well as the yield of a local millet variety ‘zhangzagu 3’. Experiments designed in randomized complete block were conducted to examine three treatments: Flat planting with whole plastic-film mulching (QP), raised bed planting with whole plastic-film mulching (QW), and traditional planting without mulching (CK). 【Result】 QP and QW not only significantly increased 0~40 cm soil water content, but also the germinating rate. Compared to QP, QW improved the soil moisture, but not germinating rate. Compared to the CK, QP and QW increased the yield by 16.24% and 11.48% respectively in 2015, and 19.00% and 29.96% with associated yield of 7 139 kg/hm2 and 7 796 kg/hm2 respectively in 2016. 【Conclusion】 Whole film mulching with flat planting appears to be an improved solution to sustain millet productivity in relatively dry seasons, while whole film mulching with raised-bed works better in relatively wet seasons. |
| Key words: full film mulching; millet; physiological traits; yield |
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