GAO Jianmin, DENG Zhong, LÜ Mouchao, et al. Effect of Border Fertigation Model on Irrigation Quality and Water Using Efficiency of Summer Maize[J]. 2018, 32(6): 79-86.
DOI:
GAO Jianmin, DENG Zhong, LÜ Mouchao, et al. Effect of Border Fertigation Model on Irrigation Quality and Water Using Efficiency of Summer Maize[J]. 2018, 32(6): 79-86. DOI: 10.13870/j.cnki.stbcxb.2018.06.013.
Effect of Border Fertigation Model on Irrigation Quality and Water Using Efficiency of Summer Maize
Field experiment of border irrigation of summer maize was conducted to analyze the effect of border fertigation model on crop growth as well as soil water and nitrogen
evaluate the irrigation fertilization quality and water using efficiency under different treatment
and investigate suitable model of border fertigation. Different border width
fertilization timing
and inflow cutoff were selected in the field experiment
and the optimum level combination of fertigation was selected by orthogonal design.The results showed that the influence of different treatment on storage efficiency of soil water and nitrogen are not significant
but the effect on soil nitrate uniformity is obvious and it is same to soil water. The storage efficiency of soil water (59%~63%) were lower than that of soil nitrogen (61%~64%) while the uniformity of soil water (95%~99%)were higher than that of soil nitrogen (85%~94%). The yield and water using efficiency were significant affected by border width
timing of fertilization and inflow cutoff. Considering all the indexes
the border fertigation model with the border width of 1.5 m
the inflow cutoff of 95%
and applying fertilizer as water advanced at 1/2 of the border length showed higher storage efficiency(63.36% and 64.01%) and uniformity (98.71% and 94.42%) of soil water and nitrogen
was benefit to form a uniform soil condition for crops absorption and uptake
and could achieve a higher yield (9 886.1 kg/hm2) and water using efficiency(2.62 kg/(hm2·mm)).
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Related Institution
College of Resources and Environment, Jilin Agricultural University, Ministry of Agriculture and Rural Affairs Saline-Alkali Soil Improvement and Utilization (Northeast Inland Saline-Alkali Land)
Institute of Mountain Hazards and Environment, Chinese Academy of Sciences