| Effect of row position of drip irrigation on grain quality of different wheat varieties |
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| DOI：10.7606/j.issn.1000-7601.2021.02.10 |
| Key Words: drip irrigation row position effect wheat variety water and nitrogen supply grain quality |
| Author Name | Affiliation | | YANG Jianping | College of Agriculture, Shihezi University, Shihezi, Xinjiang 832000, China | | LV Zhaoyan | College of Horticulture, Anhui Agricultural University, Hefei, Anhui 230000, China | | ZHANG Longlong | College of Agriculture, Shihezi University, Shihezi, Xinjiang 832000, China | | LU Weipeng | College of Agriculture, Shihezi University, Shihezi, Xinjiang 832000, China | | DIAO Ming | College of Agriculture, Shihezi University, Shihezi, Xinjiang 832000, China | | LI Weihua | College of Agriculture, Shihezi University, Shihezi, Xinjiang 832000, China | | JIANG Dong | College of Agricultural, Nanjing Agricultural University, Nanjing, Jiangsu 210000, China |
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| Abstract: |
| In order to clarify the supply of water and nitrogen (N) under TR6 (“one tube 6 rows”) and TR8 (“one tube 8 rows”) drip irrigation conditions and their effects on grain quality of different wheat varieties,twenty spring wheat varieties from different regions including Xinjiang, Inner Mongolia, and Ningxia were planted, and the water and N supply and grain quality of different varieties were investigated. The results showed that under the TR6 drip irrigation mode, the water supply of R2 and R3 decreased by 32.40%~33.08% and 60.52%~61.51% relative to R1, respectively, and the soil N supply decreased by 20.76%~32.40% and 55.80%~60.52% relative to R1. Under TR8 drip irrigation mode, the water supply of R2, R3, and R4 wheat decreased by 35.57%~37.17%, 60.70%~61.00%, and 83.29%~83.42% compared with R1, respectively, and the soil N supply decreased by 22.72%~26.18%,54.67%~57.09%, and 80.16%~80.88% compared with R1. Under the two drip irrigation modes, the coefficient variation of N supply between rows was lower than that of water supply. The maximum inter-row variation coefficient of grain quality for all varieties under the two drip irrigation modes was 9.12%, which was less than the minimum water and N supply of 37.87%. The coefficient variation grain protein content, sedimentation volume, wet gluten, and amylose content of TR6 between rows was significantly lower than that of TR8 (p＜0.05).Principal component analysis showed that grain protein content, wet gluten, and amylose content were positively correlated with principal component 1, and the correlation coefficients were all greater than 0.685, which was negatively correlated with the principal component 2. The sedimentation volume was positively correlated with principal component 2, and the correlation coefficient was greater than 0.284.Under different drip irrigation modes in different years, Xinchun 37, Xinchun 38, and Jinqiang 7 were in a cluster that the contents of grain protein content, sedimentation volume, wet gluten, and amylose content were the highest among all. |
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