摘要
采用小区试验设计、以人工接菌和药剂保护方法造成有显著差异的多梯度病情。根据乳熟期病情指数x_1,腊熟期病情指数x_2和x_3(x_3=x_2-x_1)与产量关系组配成三个可预报不同发病程度下的产量回归模型,预产量■和病害产量损失率L的结果为:■=583.416-11.340x_1;■=593.341-7.126x_2;■=584.470-5.750x_1-8.269x_3;L=(1-■/a)×100%。
Significant different multigradient diseases of wheat scab were caused by inoculation and fungicide protection in Plot tests. Based on the relations between yield (Y) and disease index x_1 in milk ripe stage, disease index x_2 in wax ripe stage, and disease index x_3(x_3=x_2—x_1), respectively Three yield regression models were estallished, which can be used to Predict yield and to estimate yield loss ratio based on a yield loss ratio formula.
