干旱区生态环境知识资源中心(Arid): 干旱区不同水氮梯度滴灌冬小麦干物质积累动态特征及产量效应

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	干旱区不同水氮梯度滴灌冬小麦干物质积累动态特征及产量效应
其他题名	Analysis on DMA Dynamic Characteristics and Yield of Winter Wheat with Different Water and Nitrogen Gradients Under Drip Irrigation in Arid Area
	张旭; 李莎; 蔡煜; 马亮
来源期刊	西南农业学报
ISSN	1001-4829
出版年	2020
卷号	33 期号:9
中文摘要	【目的】进一步探究了灌水、施氮对南疆冬小麦干物质积累(DMA)动态和产量的影响机制。【方法】本研究在阿克苏地区红旗坡农场的无底测坑中进行田间试验 ,设置3个灌水梯度(80 % ET_C、100 % ET_C、120 % ET_C )和3个氮肥梯度(0、207、276 kg / hm~2 )处理,采用Richards数学模型定量分析了不同灌水、施氮水平下DMA动态变化过程以及对产量及其构成要素的影响。【结果】灌水定额100 %ET_C、施氮量207 kg /hm~2的处理DMA最大速率、平均速率最大,达到最大速率的时间最早,快增期的持续时间最长,产量达到12.477 t /hm~2,较当地冬小麦水氮配比模式增产35.56 %。过度增加灌水、施氮量对其产生抑制作用。产量及产量构成要素均与DMA的平均速率、最大速率呈显著正相关性,与进入快增期的相对积温(RGDD)呈显著负相关性。【结论】水分、氮肥是该研究区冬小麦产量的限制因素。
英文摘要	【Objective】This paper aimed to further explore the mechanism of irrigation and nitrogen application on the accumulation dynamics and yield of winter wheat dry matter (DMA) in southern Xinjiang.【Method】The field experiments were conducted in the bottomless pit of Hongqipo farm in Aksu area,setting three irrigation gradients (80 %ET_C,100 %ET_C,120 %ET_C ) and three nitrogen fertilizer gradients (0,2 07, 276 kg /hm~2 ),using the Richards mathematical model, the dynamic process of DMA under irrigation and nitrogen application levels and its impact on yield and its components were quantitatively analyzed.【Result】The maximum rate and average rate of DMA accumulation in the treatment of 100 % ET_C and 207 kg /hm~2 were the largest,the time to reach the maximum rate was the earliest,the duration of the fast increase period was the longest,the yield reached 12.477 t /hm~2,and the local winter wheat water-nitrogen ratio model increased production by 35.56 %. Excessive increase in irrigation and nitrogen application could inhibit it. Both yield and yield components were signifi cantly positively correlated with the average rate and maximum rate of DMA accumulation and negatively correlated with the relative accumulated temperature (RGDD) of the fast-growing period.【Conclusion】Water and nitrogen fertilizers are the limits of winter wheat yield in tested area.
中文关键词	冬小麦 ; 滴灌 ; 氮肥 ; Richards模型
英文关键词	Winter wheat Drip irrigation Nitrogen fertilizer Richards model
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Agriculture
CSCD记录号	CSCD:6846472
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/353933
作者单位	张旭, 新疆农业大学水利与土木工程学院, 乌鲁木齐, 新疆 830052, 中国. 李莎, 新疆农业大学水利与土木工程学院, 乌鲁木齐, 新疆 830052, 中国. 蔡煜, 新疆农业大学水利与土木工程学院, 乌鲁木齐, 新疆 830052, 中国. 马亮, 新疆农业大学水利与土木工程学院, 乌鲁木齐, 新疆 830052, 中国.
推荐引用方式 GB/T 7714	张旭,李莎,蔡煜,等. 干旱区不同水氮梯度滴灌冬小麦干物质积累动态特征及产量效应[J],2020,33(9).
APA	张旭,李莎,蔡煜,&马亮.(2020).干旱区不同水氮梯度滴灌冬小麦干物质积累动态特征及产量效应.西南农业学报,33(9).
MLA	张旭,et al."干旱区不同水氮梯度滴灌冬小麦干物质积累动态特征及产量效应".西南农业学报 33.9(2020).