摘要
为了对小麦精准施肥,提高小麦的抗倒伏能力,该文以郑麦9023为研究对象,磷钾肥配施共6个处理,分别在小麦拔节期、孕穗期、扬花期、灌浆期、成熟期等5个生长期,利用非金属材料万能试验机,对去鞘茎秆作3点弯曲试验,测试茎秆基部第2节间的弯曲强度和抗弯刚度。分析结果表明:施用钾肥,可显著提高茎秆基部第2节间的弯曲强度和抗弯刚度。研究结果可为小麦的高产栽培、抗倒伏研究提供参考依据。
In order to prevent wheat stem lodging and to fertilize precisely,the experiments on the influence of phosphate and potash fertilizers on mechanical properties of wheat stem were performed with Zhengzhou-wheat 9023 as an object.Mechanical properties（such as flexural strength and flexural rigidity）of second base inter-node were measured by six treatments at five growth stages of wheat,which were jointing stage,booting stage,flowering stage, grain-filling stage and maturity stage.Nonmetallic material testing machine was used in the experiments.Results showed that the influence of potash fertilizer on flexural strength and flexural rigidity of second base inter-node was significant. The study results provide some references for the research on high yield cultivation and lodging resistance of wheat.
出处
《农业工程学报》
EI
CAS
CSCD
北大核心
2010年第4期147-150,共4页
Transactions of the Chinese Society of Agricultural Engineering
基金
国家粮食丰产科技工程河南课题(2006BAD02A07-04)
河南省自然科学基金项目(2009B2016)
关键词
农作物
肥料
力学特性
小麦
钾肥
crops
fertilizers
mechanical properties
wheat
potash fertilize
