Effects of no tillage and straw mulching on soil nitrogen, water content and yield of spring wheat in dryland farming area

doi:10.3969/j.issn.1004-1524.2020.08.01

›› 2020, Vol. 32 ›› Issue (8): 1329-1341.DOI: 10.3969/j.issn.1004-1524.2020.08.01

• Crop Science • Previous Articles Next Articles

Effects of no tillage and straw mulching on soil nitrogen, water content and yield of spring wheat in dryland farming area

ZHANG Tongshuai^a, YAN Lijuan^b,*, LI Guang^a, CHEN Guopeng^a, LUO Yongzhong^a

a. College of Forestry, Gansu Agricultural University, Lanzhou 730070, China;
b. Agronomy College, Gansu Agricultural University, Lanzhou 730070, China

Received:2020-02-11 Online:2020-08-25 Published:2020-08-28

Abstract

Abstract: In the present study, a field experiment was conducted with randomized block design, including conventional tillage (CT), no tillage (NT), conventional tillage+straw mulching (TS), no tillage+straw mulching (NTS), to explore the water and fertilizer effect and yield characteristics of spring wheat under different treatments in dryland farming area. The soil bulk density, contents of total nitrogen, ammonium nitrogen, nitrate nitrogen, soil water content, and wheat yield were determined. It was shown that after two years' experiment, the soil bulk density of NT and NTS in 0-10 cm soil layer was significantly (P<0.05) higher than that of CT and TS. Compared with CT, TS and NTS increased soil water content and total nitrogen content in soil surface layer (0-40 cm). According to the average of two-year results, the soil water content of TS, NT and NTS was increased by 8.33%, 3.17% and 3.82% than that of CT, respectively. The soil total nitrogen content of TS and NTS was significantly (P<0.05) increased by 1.78% and 3.48% than that of CT, respectively. However, TS, NT and NTS significantly (P<0.05) decreased the content of ammonium nitrogen and nitrate nitrogen compared with CT. Based on the average of two-year result, compared with CT, TS and NTS increased the yield of spring wheat, while NT decreased the yield of spring wheat.

Key words: tillage management, dryland farming, spring wheat, soil physical and chemical properties, yield

CLC Number:

S504

ZHANG Tongshuai, YAN Lijuan, LI Guang, CHEN Guopeng, LUO Yongzhong. Effects of no tillage and straw mulching on soil nitrogen, water content and yield of spring wheat in dryland farming area[J]. , 2020, 32(8): 1329-1341.

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Effects of no tillage and straw mulching on soil nitrogen, water content and yield of spring wheat in dryland farming area

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