摘要
对7个抗倒伏性有差异的水稻品种在2个施肥水平、2种栽培密度条件下,测定了茎秆的材料学特性。结果表明,品种间的基节折断弯矩M差异很大,新育成高产品种的基节折断弯矩均高于对照品种辽粳5号,原因是构成茎秆材料数量的增加。低氮处理使茎秆材质强度BS增加;稀植导致构成茎秆材料的数量增加。
The material characteristics of 7 varieties with different lodging-resistance at 2 nitrogen levels and 2 planting thickness were determined.The results showed that there were great differences in breaking moment value M among varieties. M value of all new varieties was high than that of CK variety Liaojing 5,because of increasing of the amount of composition of base culm.Low nitrogen treatment enhanced the strength (banding stress) of base culms. Sparse planting raised the amount of composition of base culm.The martial characteristics of varieties showed clearly different response on sparse planting.
出处
《沈阳农业大学学报》
CAS
CSCD
2003年第1期4-7,共4页
Journal of Shenyang Agricultural University
