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[1]YIN Zhirong,LEI Jinyin,ZHAO Ying,et al.Effects of Drip Irrigation Amounts on Characteristics of Moisture and Nutrient Transfer in Soil in the Lycium barbarum Field[J].Research of Soil and Water Conservation,2021,28(04):62-69.

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Effects of Drip Irrigation Amounts on Characteristics of Moisture and Nutrient Transfer in Soil in the Lycium barbarum Field

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 28 Number of periods: 2021 04 Page number: 62-69 Column: Public date: 2021-08-10

Title:: Effects of Drip Irrigation Amounts on Characteristics of Moisture and Nutrient Transfer in Soil in the Lycium barbarum Field

Author(s):: YIN Zhirong, LEI Jinyin, ZHAO Ying, GUI Linguo, HUANG Jiancheng; (Institute of Agricultural Resources and Environment, Ningxia Academy of Agriculture and Forestry Sciences, Yinchuan 750002, China)

Keywords:: drip irrigation amount; Lycium barbarum; soil moisture; soil available nutrient

CLC:: S157.6

DOI:: -

Abstract:: In order to investigate the characteristics of soil moisture and nutrient transfer under different irrigation amounts conditions in the Lycium barbarum field, a field experiment was conducted to study the effects of five drip irrigation amounts(W₁, 5 100 m³/hm²; W₂, 4 350 m³/hm²; W₃, 3 600 m³/hm²; W₄,2 850 m³/hm²; W₅,2 100 m³/hm²)on soil moisture and nutrient transfer in the Lycium barbarum field. The results showed that soil moisture changed dramatically in 20—60 cm soil depth in the Lycium barbarum field; soil moisture of 0—20 cm increased with the decrease of irrigation amounts, however, soil moisture decreased first and then increased in soil depth of 20—40 cm and 40—60 cm after drip irrigation from 1～5 d; the soil moisture in each soil depths began to decrease while the irrigation amount was reduced to a certain level(2 100 m³/hm²); meanwhile, the soil moisture in different treatments gradually increased with the soil depth; transfer of soil available nutrients was mainly found in 0—40 cm soil depth, and soil alkali-hydrolyzed nitrogen leaching to the deep soil depth was less after drip irrigation; distribution of soil available phosphorus was very similar in the soil depth in different treatments after drip irrigation, and that was accumulated in soil of 0—20 cm with contents of 90～200 mg/kg; soil available potassium contents fluctuated, and that gradually decreased with the growing stages of Lycium barbarum; in contrast to conventional irrigation (W₁), soil moisture increased in treatment of W₄, but it decreased in treatments of W₂ and W₅, which retarded soil available nutrient leaching to deep soil depth, improved nutrient uptake and utilization in the root zone, and was beneficial to improve the yield and quality of Lycium barbarum. Therefore, regulating irrigation during key growth periods could be applied to regulate the distribution of soil water and the migration and transfer of soil available nutrients.

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Last Update: 2021-08-20