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作者	单位
王卫东，赵丹阳，任瑞兰，高翔	（1.西北农林科技大学农学院，陕西杨陵 712100； 2.山西省农业科学院小麦研究所，山西临汾 41000）

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中文摘要:

为探究“金太龙”叶面肥对冬小麦产量及干热风抗性的调节作用，通过两因素随机区组试验，对不同水、肥喷施量下冬小麦产量及干热风抗逆指数进行了分析。结果表明，干热风胁迫下，冬小麦的产量、干热风抗性与叶面肥用量和喷施水量均密切相关。孕穗期喷施“金太龙”叶面肥的增产作用主要归因于穗粒数、千粒重增加，尤其是千粒重。喷施水量较低时，提高叶面肥用量不利于增加粒重，低叶面肥用量则可保证冬小麦高产和提高抗干热风的能力；喷施水量较高时，提高叶面肥用量有助于延长旗叶功能期，有利于增加粒重。综合来看，孕穗期“金太龙”叶面肥用量为3 kg·hm^-2、喷施水量225 kg·hm^-2时，冬小麦产量最高，对干热风的抗性最好。

英文摘要:

In order to explore the influence of “Jintailong” foliar fertilizer on yield and the dry-hot wind resistance(DHWR) of winter wheat under dry-hot wind stress, the yield and DHWR index of winter wheat were analyzed under different spraying amounts of water and foliar fertilizer with two factor randomized block design at booting stage. The results showed that the yield and DHWR resistance of winter wheat were closely related to spraying amounts of water and foliar fertilizer under dry-hot wind stress. Spraying foliar fertilizer could significantly increase yield and DHWR resistance of winter wheat under dry-hot wind stress. The yield increase was mainly due to the increase of grain number and 1 000-kernel weight, especially 1 000-kernel weight. The high yield and DHWR resistance of winter wheat appeared under the low spaying amount of foliar fertilizer and water, or under the high spaying amount of both factors. Wheat grain weight was not increased significantly under the low spaying amount of foliar fertilizer and water, but all the flag leaf functional phase and grain weight rose under the high spaying amount of both factors.The yield and DHWR resistance of winter wheat were highest under spaying “Jintailong” foliar fertilizer dosage of 3 kg·hm^-2 with 225 kg water per hectare at the booting stage.

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