ZHANG Meitao, YANG Peiling, REN Shumei, et al. Effects of Irrigation Water Salinity and Irrigation Amount on Soil Water and Salt Distribution and Spring Maize Growth[J]. 2022, 36(4): 290-298.
DOI:
ZHANG Meitao, YANG Peiling, REN Shumei, et al. Effects of Irrigation Water Salinity and Irrigation Amount on Soil Water and Salt Distribution and Spring Maize Growth[J]. 2022, 36(4): 290-298. DOI: 10.13870/j.cnki.stbcxb.2022.04.036.
Effects of Irrigation Water Salinity and Irrigation Amount on Soil Water and Salt Distribution and Spring Maize Growth
the effects of irrigation water salinity and irrigation amount on soil water and salt distribution and spring maize yield were explored. Taking spring maize in Hetao Irrigation District as the research object
two irrigation waters (1.1
5.0 g/L) and three irrigation amounts (210
255
300 mm) were set up for field experiments. The results showed that at maturity
the average water content and soil conductivity of 0-100 cm soil layer under 5 g/L brackish water irrigation were significantly higher than those under groundwater irrigation. In groundwater irrigation
with the increase of irrigation amounts
the decreasing trend of soil average water content in growth period decreased
and the leaching effect of soil salt was more obvious. In brackish water irrigation
when the amount of irrigation was small
the surface accumulation of soil salt appeared. With the increase of irrigation amounts
the salt content of surface soil decreased
and more salt accumulated in the deep soil. After irrigation
the surface soil water content changed obviously and there was a phenomenon of salt return
and the horizontal movement of soil water and the accumulation of deepsoil salt were more obvious in brackish water irrigation. In groundwater and brackish water irrigation
the increase of irrigation could significantly improve the yield of maize
but there was no significant difference between 255 mm and 300 mm treatments. Compared with groundwater irrigation
brackish water irrigation significantly reduced the yield of spring maize. In conclusion
under the conditions of groundwater and brackish water irrigation
255 mm irrigation water could not only be suitable for the growth of spring maize
but also ensure the yield. It could be used as a better irrigation quota and meet the requirements of ensuring crop production and saving fresh water resources in the irrigation area.
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College of Life Sciences, Yanan University, Yanan
WANG Ji-qing1,LIU She-ping1,HAN Bao-wen2 (1.College of Agriculture and Forestry,Hebei North University,Zhangjiakou,Hebei 075000,2.Institute ofAgricultural Resources and Environment,Hebei Academy of Agriculture and Forestry Sciences,,)
College of Geographical Sciences,Fujian Normal University
Key Laboratory of Humid Sub-tropical Eco-geographical Process of the Ministry of Education, Fujian Normal University
College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling