摘要
为分析小麦生育后期基部节间弯曲力学特性与氮磷钾含量的关系,测试了不同时期茎基部节间的抗弯刚度、弯曲强度、弹性模量、惯性矩等弯曲力学特性以及茎秆氮、磷、钾含量.结果表明,扬花期抗弯刚度最大,灌浆期弯曲强度最大.在一定范围内,氮含量越高,抗弯刚度越大;钾含量越高,弹性模量值越小;氮含量越高,惯性矩越大.
Relationships between stem bending properties such as bending rigidity, bending strength, elastic modulus and moment of inertia and contents of nitrogen, phosphorus and potassium in late growing period in wheat were studied in this study. The results showed that value of bending rigidity was the maximum at anthesis. Value of bending strength was the maximum at grain-filling stage. The more nitrogen content wheat stem had, the bigger the flexural rigidity was. The more potassium content wheat stem had, the smaller the elastic modulus was. The more nitrogen content wheat stem had, the bigger the moment of inertia was.
出处
《河南农业大学学报》
CAS
CSCD
北大核心
2010年第2期121-125,共5页
Journal of Henan Agricultural University
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
小麦
茎秆
抗弯刚度
弯曲强度
氮
磷
钾
wheat
stem
bending rigidity
bending strength
nitrogen
phosphorus
potassium
