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[1]YANG Dong,LI Xinju,KONG Xinxin.Effects of Different Straw Returning Modes on the Water and Salt Movement in the Coastal Saline Soil[J].Research of Soil and Water Conservation,2017,24(06):74-78.

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Effects of Different Straw Returning Modes on the Water and Salt Movement in the Coastal Saline Soil

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 24 Number of periods: 2017 06 Page number: 74-78 Column: Public date: 2017-11-24

Title:: Effects of Different Straw Returning Modes on the Water and Salt Movement in the Coastal Saline Soil

Author(s):: YANG Dong, LI Xinju, KONG Xinxin; College of Resources and Environment, National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, Shandong Agricultural University, Taian, Shandong 271018, China

Keywords:: straw return; soil moisture; soil salinity; winter wheat yield; coastal saline soil

CLC:: S156.4

DOI:: -

Abstract:: In order to explore the mechanism of the water and salt in the context of straw return to the coastal saline soil, field experiments were conducted under 4 treatments:straw mulching(P), straw buried (S), straw mulching and buried (T), conventional tillage (CK), to examine the water and salt movement and effects on the winter wheat yield. The results showed that straw returning increased soil water storage, the average growth stage soil storage of winter wheat in 0-70 cm soil layers of P, S and T were 8.28 mm, 6.86 mm and 13.76 mm higher than CK,respectively. increase of soil moisture in 30 cm soil layers under straw returning was apparent before the middle of winter wheat, but the difference between the treatments and the soil water content decreased with the process of the growing stage. The content of soil salinity was inhibited by straw returning, T reduced the salt content in 0-50 cm soil salinity significantly, the average soil salt increase rates were 41.24%, 32.08% and 52.77%, respectively, lower than P, S and CK, showing a significant effect of plough layer. Straw returning improved the soil water and salt, increased the yield of winter wheat significantly, showing the order of T > P > S > CK. T was the best treatment to improve the status of the soil water-salt and the yield.

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