Chinese Journal of Agrometeorology ›› 2017, Vol. 38 ›› Issue (12): 771-779.doi: 10.3969/j.issn.1000-6362.2017.12.003

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Effects of Organic Fertilizer Combined with Biochar on Soil Moisture and Water Use Efficiency in Vegetable Field

WANG Zhan, LI Yin-kun, WANG Li-chun, GUO Wen-zhong, XU Zhi-gang, YANG Zi-qiang, MA Li, LI Qiu-chen   

  1. 1.Beijing Research Center of Intelligent Equipment for Agriculture, Beijing 100097, China; 2.Nanjing Agricultural University, Nanjing 210095; 3.Wuzhong National Agricultural Science and Technology Park Management Committee, Wuzhong 751100; 4.Ningxia University, Yinchuan 750021
  • Received:2017-03-25 Online:2017-12-20 Published:2017-12-22

Abstract: Taking Chinese Flowering Cabbage as the experimental materal, the positioning experiment of single and combined fertilization of biochar and organic fertilizer was carried out in Wuzhong dry area in Ningxia. The research analyzed the experimental data about the first crop among three corps a year in total that planted on 13th May 2015, and harvested on 22nd June 2015. The experiment totally included four treatments as single organic fertilizer (M, 110t.ha-1), single biochar (C, 17t.ha-1), organic fertilizer combined with biochar (MC, 110+17t.ha-1) and no organic fertilizer and biochar (CK). Through testing the moisture dynamics and growing state of 0-70cm soil layer in growth period of Chinese Flowering Cabbage to analyze the role and effect of cultivation model of biochar combined with organic fertilizer in organic vegetable garden in northern of China. The results showed that the treatment MC could effectively increased the water content in 0-10cm soil layer. Compared with treatment CK, M and C, the average ratio of water content of 0-10cm soil layer in whole growth period increased by 12.4-29.2 percentage (P<0.05) respectively. Treatment MC changed the distribution of moisture in soil section profile, concentrate more moisture in 0-30cm soil layer and enhanced available water content for corps and had a remarkable role on water retention. Treatment MC could promote the growth of Chinese Flowering Cabbage and increase corps yield and water use efficiency (WUE). Compared with treatment M, the plant height of Chinese Flowering Cabbage, yield, biomass and WUE increased by 39.6%, 63.0%, 51.4% and 64.0% (P<0.01) respectively in harvest season. The results indicated that treatment of biochar combined with organic fertilizer (MC) had remarkable role in water-storing and soil-maintenance and could be popularized as a preferential cultivation management model in local region.

Key words: Soil moisture, Soil water storage, Flowering Chinese Cabbage, Biomass