水肥耦合对黄河三角洲盐碱地小麦形态特征生理特性及产量的影响

为探索黄河三角洲轻度和中度盐碱地的小麦水肥管理模式,为该地区的小麦生产提供理论支撑,设置不灌水,灌底墒水,灌底墒水和拔节水,灌底墒水、拔节水和灌浆水4种灌水方式;不施肥,施有机肥,施有机肥与无机复合肥和施无机复合肥4种施肥方式,研究水肥耦合对黄河三角洲盐碱地小麦形态特征生理特性及产量的影响.结果显示,在相同肥料价格的情况下:(1)灌3次水无机复合肥处理的小麦叶面积指数最高,可以提高叶面积持续期.(2)无机复合肥和拔节水有助于小麦株高的增加.(3)无机复合肥和灌拔节水可以减少小麦受到的胁迫,且旗叶的丙二醛、还原型谷胱甘肽、脯氨酸含量在各处理中均为最低.(4)灌3次水无机复合肥处理的小麦产量最高,并且对产量构成因素影响显著.由此确定,在考虑肥料价格的情况下,灌3次水,施无机复合肥更适合黄河三角洲盐碱地小麦种植,有利于促进产量提升.

Effects of different irrigation times and fertilizer types on the physiological status and yield of wheat in the Yellow River Delta

In order to explore the irrigation and fertilizer management model of wheat in the Yellow River Delta, and provide theoretical support for wheat production in this region.We set four irrigations which are no irrigation before sowing, irrigation before sowing, irrigation before sowing and jointing irrigation, irrigation before sowing, jointing irrigation and filling stage irrigation and four fertilizer types which are no fertilization, organic fertilizer, organic and inorganic compound fertilizer, inorganic compound fertilizer in this paper.Under the same fertilizer price, the results showed that the leaf area index of wheat treated with three times of irrigations and inorganic compound fertilizer was the highest, which could improve the leaf area duration.Inorganic compound fertilizer and irrigation in jointing stage were helpful to increase the plant height of Wheat.Inorganic compound fertilizer and irrigation in jointing stage can reduce the stress of wheat, and the content of MDA, GSH, proline in all treatments were the lowest.The yield of wheat treated with three times of irrigations and inorganic compound fertilizer was the highest, and had significant effect on Yield Components.Thus, under the consideration of the fertilizer price, irrigation three times and inorganic compound fertilizer is more suitable for wheat planting in saline alkali soil of the Yellow River Delta, which is helpful to promote the yield increase.