不同节水模式对阴山北麓马铃薯干物质积累、产量及经济效益的影响

doi:10.12190/j.issn.2096-1197.2020.03.09

Abstract

Abstract: 【Objective】To explore a high-efficiency water-saving mode suitable for the North Yinshan Mountain,the effects of different water-saving modes on dry matter accumulation,yield and benefits were analyzed and compared on potato in the North Yinshan Mountain.【Methods】A split-plot design was used for analyzing and comparing the differences between dry matter accumulation,transportation,yield,commodity characteristics and economic benefits in potato on three water-saving planting modes of high ridge drip irrigation（HRDI）,under mulch drip irrigation（UMDI） and shallow buried drip irrigation（SBDI） under the irrigation gradient of 1 500 m³/hm²（gradient 1） and 1 950 m³/hm²（gradient 2）.【Results】Shallow buried drip irrigation （SBDI） mode could effectively promote the potato plant dry matter accumulation;SBDI1 treatment maintained the highest dry matter accumulation of the whole plant during the tuber forming stage,tuber bulking stage and starch accumulation stage;SBDI1 treatment maintained the highest stem and leaf dry matter transportation and the highest contribution rate of dry matter transportation to tuber formation;in mature period of SBDI1 and SBDI2,dry matter accumulation of the whole plant were 286.05 g/plant and 274.67 g/plant,which were significantly higher than other treatments（P<0.05）.SBDI2 treatment maintained the highest potato number of per plant,potato weight of per plant and commercial potato rate of per plant,which were 6.65,1.24 kg and 90.80% respectively. From high to low,the yield of each treatment was SBDI1>HRDI1>UMDI1>SBDI2>HRDI2>UMDI2;the yield of SBDI1 treatment was the highest which was 47.40 t/hm² and it was increased in comparision with other treatments by 1.61%,2.27%,3.27%,6.54%,10.23% respectively;under the same irrigation amount,potato yield was shown as SBDI>HRDI>UMDI;under irrigation amount of 1 500 m³/hm²,potato yield of the three water-saving modes were all higher than irrigation water amount of 1 950 m³/hm² treatment;SBDI1 treatment and SBDI2 treatment achieved higher economic benefits,22 604 yuan/hm² and 22 748 yuan/hm² respectively.【Conclusion】Shallow buried drip irrigation could achieve high yield and efficiency under the premise of saving water and film. Shallow buried drip irrigation with irrigation amount of 1 500 m³/hm² could be promoted and applied as a new high-efficiency water-saving mode in the North Yinshan Mountain where the precipitation was 300-400 mm during potato growth period.

Key words: Potato, The North Yinshan Mountain, Shallow buried drip irrigation, Yield

CLC Number:

S532

JIN Zhi, CHEN Ruiying, Wulan, GUAN Ting, ZHAO Peirong, JIA Liguo, WU Yunxia. Effects of different water-saving modes on dry matter accumulation,yield and economic benefits of potato in the North Yinshan Mountain[J].Journal of Northern Agriculture, 2020, 48(3): 60-66.

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Effects of different water-saving modes on dry matter accumulation,yield and economic benefits of potato in the North Yinshan Mountain

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