当前位置: 首页 > 文章 > 不同深松深度对夏玉米根系时空分布及氮素利用的响应 山东农业科学 2016,48 (10) 92-97
Position: Home > Articles > Response of Maize Root Distribution and Nitrogen Acquisition Efficiency to Subsoiling Depth Shandong Agricultural Sciences 2016,48 (10) 92-97

不同深松深度对夏玉米根系时空分布及氮素利用的响应

作  者:
吴广俊;刘鹏;董树亭;张吉旺;赵斌
单  位:
山东农业大学农学院/作物生物学国家重点实验室
关键词:
夏玉米;深松深度;根系;氮素吸收效率
摘  要:
研究不同深松对夏玉米根系时空分布及氮素吸收利用的响应,旨在探明深松下玉米根系与养分的协调一致性,进而提高产量及氮素利用效率。选用郑单958为试验材料,设置3个深松深度,即不深松(S0)、15 cm深松(S15)、35 cm深松(S35)。结果表明,35 cm深松对比不深松和15 cm深松显著增加深层根系数量及分配比例,进而增加叶面积指数和单株生物量,提高氮素吸收效率,最终促进产量的显著提高。因此35 cm深松增产效果较为明显。
译  名:
Response of Maize Root Distribution and Nitrogen Acquisition Efficiency to Subsoiling Depth
作  者:
Wu Guangjun;Liu Peng;Dong Shuting;Zhang Jiwang;Zhao Bin;College of Agronomy,Shandong Agricultural University,State Key Laboratory of Crop Biology;
关键词:
Summer maize;;Subsoiling depth;;Root;;Nitrogen acquisition efficiency
摘  要:
The response of maize root distribution and nitrogen acquisition efficiency to subsoiling depth was studied to explore the relationship between maize root and nutrients,and then improve the nitrogen use efficiency and maize yield. Zhengdan 958 was used as experimental material,and 3 subsoiling depths,including no- subsoiling( S0),15- cm subsoiling( S15),35- cm subsoiling( S35),were designed in this experiment. The results showed that compared with S0 and S15,the S35 treatment significantly increased the root number and allocation proportion in deep soil,enhanced the leaf area index and single plant biomass,improved the nitrogen uptake efficiency,and ultimately,boosted the maize yield. In conclusion,S35 treatment owned more obvious yield increasing effect.

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