【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x₁,腊熟期病情指数x₂和x₃（x₃=x₂-x₁）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:■=583.416-11.340x₁;■=593.341-7.126x₂;■=584.470-5.750x₁-8.269x₃;L=（1-■/a）×100%。更多还原

【Abstract】 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 x₁ in milk ripe stage, disease index x₂ in wax ripe stage, and disease index x₃（x₃=x₂—x₁）, 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.更多还原