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当前位置: 首页 > 文章 > 不同肥力麦田水氮交互效应与耦合模式研究 作物学报 1998 (6) 963-970
Position: Home > Articles > Studies on Interactive Effect and Coupling Model of Irrigation and N Application in Different Fertility Wheat Fields Acta Agronomica Sinica 1998 (6) 963-970

不同肥力麦田水氮交互效应与耦合模式研究

作  者：
介晓磊;韩燕来;谭金芳;彭华;高文红;张化平;王立河;王喜枝
单  位：
河南省农业学校;河南省济源市农业局;国家小麦工程技术研究中心
关键词：
麦田;肥力;水氮交互;耦合模式
摘  要：
采用大田试验的方法,研究黄潮土上两种肥力麦田水氮交互效应的结果表明:在供试条件下,高肥力麦田灌水及水氮交互效应下显著,氮肥效应虽显著,但效应值很低,水氮增产潜力小。中高肥力麦田中,水氮增产潜力大,尤其是氮肥效应极为显著,水氮间存在负互作用;灌水不足会降低小麦产量和氮肥肥效,通过增施氮肥可一定程度弥补水分不足而提高产量;改善灌水条件可促进氮肥肥效的发挥,从而降低小麦最高产量施氮量;大水大肥不利于小麦产量和肥水利用率的提高。在高肥力麦田常规灌溉制度下,以施纯氮10～13 kg·mu~1为宜,可获得550～580 kg·mu~1的小麦产量;在中高肥力麦田,灌1～3水,以施氮16～20kg·mu~1为宜,可获500kg·mu~(-1)以上的小麦产量。通过水氮最佳耦合,在高肥力麦田保证最高成穗数,在中、高肥力麦田保证最作穗数和穗粒数,是提高小麦产量的关键。
译  名：
Studies on Interactive Effect and Coupling Model of Irrigation and N Application in Different Fertility Wheat Fields
作  者：
Jie Xiaolei Han Yanlai Tan Jinfang Peng Hua Gao Wenhong Zhang Huaping Wang Lihe Wang Xizhi (The National Engineering Research Center for Wheat, Zhengzhou, 450002; Agricultural Bureau of Jiyuan City, Jiyuan, 454600; Henan Agricultural School, Zhangmu, 451400)
关键词：
Wheat field; Fertility; Interaction of irrigation and N application; Coupling model
摘  要：
This paper studied the interactive effects on wheat yield and the coupling mod els of irrigation and N application in different fertility wheat fields derived from Yellow-chao soil. The results showed that in the high fertility field, the yield effect of irrigation and the interactive effect of irrigation and N fertilizer were not significant, and although the effect of N was evident, the value was very low. While in mid-high fertility field, the yield increasing potential was great, especially the marginal effect of N was very high and changed in the form of parabolic curve, and the interactive effect of irrigation and N was negative. Insufficient irrigation might reduce the wheat yield and N efficiency, and increase N application could make up the loss of insufficient ir rigation in certain degree; Improved irrigation could raise N efficiency and therefore lowered the amount of N applied to get maximum yield. Too much irrigation and N application were unfavor able to the wheat yield and the efficiencies of water and N. In high fertility field, the optimum rate of N was 10~13 kg·mu-1 to harvest a maximum yield of 550~580 kg·mu-1 under the normal irrigation; while in mid-high fertility field, the optimum rate of N was 16~20 kg·mu-1 to get a yield above 500 kg·mu-1 when irrigate 3 times (75 mm. time-1). To achieve higher wheat yield further, it is the key way to ensure a maximum ear number in high fertility field and maximum numbers of ear and ear-grain in mid-high fertility field through the best coupling of ir rigation and N application.

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