2023年 02期

咸淡水交替灌溉对冬小麦生理生化特征及产量的影响

Effects of Alternate Irrigation with Brackish and Fresh Water on Physiological and Biochemical property and Yield of Winter Wheat


摘要(Abstract):

为了合理利用微咸水资源,制定适宜的微咸水灌溉制度,选择典型灌区开展田间试验研究,设置矿化度、灌溉定额2个因素,以及淡水-淡水(T_1)、淡水-淡水-淡水(T_2)、淡水-微咸水(T_3)、淡水-微咸水-微咸水(T_4)4个灌溉方案,研究咸淡水交替灌溉对冬小麦生理生化特征及产量的影响。结果表明:微咸水灌溉的各土层含盐量较淡水灌溉的显著提高;拔节期灌溉后3 d,方案T_4的最大荧光产量增加17.73%,叶片脯氨酸、可溶性还原糖分别增加12.89%、 57.63%;灌浆期灌溉前,方案T_3、 T_4的土壤含盐量显著提高,叶片净光合速率减小22.52%~25.35%;灌浆期灌溉后6 d,方案T_4的最大荧光产量、最大光化学量子产量分别增加6.44%、 1.38%,脯氨酸、可溶性还原糖含量分别减小19.09%、 5.87%,说明微咸水灌溉可以缓解干旱胁迫;与方案T_1、 T_3相比,方案T_4的千粒重显著增大,产量分别提高12.24%~12.81%。

关键词(KeyWords): 咸淡水交替灌溉;冬小麦;生理生化特征;荧光动力学参数;产量

基金项目(Foundation): 国家重点研发计划项目(2017YFD0800601);; 山东省自然科学基金项目(ZR2020ME255)

作者(Author): 王昱东,庞桂斌,傅新,于浩洋,张立志,王昕,徐征和

DOI: 10.13349/j.cnki.jdxbn.20230109.004

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