The Combined Effects of Plastic Film Mulching and Lateral Layout on Soil Water and Nitrate Distribution Uniformity, Shoot-Root Growth, and Grain Yields of Mulched Drip Irrigated Spring Maize
|更新时间:2025-03-12
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The Combined Effects of Plastic Film Mulching and Lateral Layout on Soil Water and Nitrate Distribution Uniformity, Shoot-Root Growth, and Grain Yields of Mulched Drip Irrigated Spring Maize
ZHOU Lifeng, JIANG Youyuan, FENG Hao, et al. The Combined Effects of Plastic Film Mulching and Lateral Layout on Soil Water and Nitrate Distribution Uniformity, Shoot-Root Growth, and Grain Yields of Mulched Drip Irrigated Spring Maize[J]. 2023, 37(3): 288-295.
DOI:
ZHOU Lifeng, JIANG Youyuan, FENG Hao, et al. The Combined Effects of Plastic Film Mulching and Lateral Layout on Soil Water and Nitrate Distribution Uniformity, Shoot-Root Growth, and Grain Yields of Mulched Drip Irrigated Spring Maize[J]. 2023, 37(3): 288-295. DOI: 10.13870/j.cnki.stbcxb.2023.03.037.
The Combined Effects of Plastic Film Mulching and Lateral Layout on Soil Water and Nitrate Distribution Uniformity, Shoot-Root Growth, and Grain Yields of Mulched Drip Irrigated Spring Maize
A 2-year experiment was conducted to investigate the effects of different lateral spacing and mulching methods on soil moisture
soil NO3- concentration
soil water spatial distribution uniformity (CUw)
soil NO3- spatial distribution uniformity (CUN)
shoot-root growth
grain yield
and harvest index (HI) of spring maize in Hetao Irrigation District. The experiment included two lateral spacing (A1: 1 m; A2: 0.5 m) and two mulching methods (M1: fully mulched; M2: partially mulched). Results showed that soil moisture was consistent with CUw in root zone
however
the increased soil NO3- concentration did not lead to an increased CUN under high-frequency mulched drip fertilization. The improvement of soil water (and CUw) and NO3- (and CUN) did not significantly influence crop root length (or weight) density
but it increased leaf area
and finally reduced root-shoot ratio. Compared with laterals layout
mulching methods imposed more effects on crop yield and HI. Under low-frequency irrigation condition
compared with partial mulching
full mulching increased soil moisture and NO3- concentration in root zone and resulted in higher crop yields and HI; however
grain yields and HI in full mulching were lower than that in partial mulching under high frequency irrigation condition. In this study
grain yields and HI were the highest when the ratio of root surface area and leaf area (RSA/LA) was equal to 4
the too high or too low RSA/LA reduced crop yield and HI. Based on high grain yield
HI
and low costs of drip taps
A1M2 was recommended under high fertigation frequency
while A1M1 was recommended under low fertigation frequency.
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Related Author
QI Zhijuan1
3
YE Hanchun
ZHAO Xiangdong
WANG Zhenhua
ZHANG Jinzhu
LIU Jian
LIN Haixia
Related Institution
Institute of Water Saving in Arid Areas of China, Northwest A&F University, Yangling
College of Water Conservancy Hydraulic and Civil Engineering, Northeast Agricultural University
Research Center of Soil and Water Conservation and Ecological Environment, Chinese Academy of Sciences and Ministry of Education, Yangling
Yili Vocational and Technical College, Yining
College of Water Conservancy and Architectural Engineering, Shihezi University