摘要
本文讨论一个描述杂草为害导致作物产量损失的经验模型。该模型能反映杂草与作物产量损失的关系特征,其参数具有显著的生物学意义。用不同来源的试验资料进行测试,结果表明,模型具有较高的预测可信度,其参数所反映的生物学意义与实际情况基本一致。
In this paper,an empirical model feflecting the hyperbolic relation-ship between weed density and crop-yield loss is presentted for simu-lating the dynamic damage of weed to crop.Some experimental data fromdifferent area and on different crop has been used to validate themodel.It appears that the model can provide a good fitting to the cropyield loss-weed density relationship,and the parameters in the modelare able to reflect the interference features of weed to crop.
出处
《植物保护学报》
CAS
CSCD
北大核心
1991年第4期371-377,共7页
Journal of Plant Protection
关键词
杂草
作物
产量损失
经验模型
empirical model——crop-yield losses——intra-specific interference——inter-spicific interference
