433.01 農業(yè)災害史Agricultural disaster history
433.1 天災與其防治Natural disasters and control同：環(huán)境的損害 森林天然災害與防治入436.31
433.11 寒害Chilly injuries低溫、霜凍、冰雹等入此
433.15 風災Wind damages
433.16 水災Flood damages
433.17 旱災；熱害Drought and heat damages
433.18 火災Fire damages
433.19 空氣污染Air pollution
433.2 鳥獸害與其防治Bird and mammal pests and control
433.3 植物蟲害與其防治Plant insect pests and control農業(yè)昆蟲學入此
433.4 植物病害與其防治Plant diseases and control 參見373.9植物病理學
433.41 作物病理學Crop pathology；作物免疫學Crop immunology
433.42 傳染性病害Infectious diseases
433.421 細菌性疾病Bacterial diseases
433.422 真菌性疾病Fungal diseases
433.423 病毒病害Virus diseases
433.424 線蟲病害Nematode diseases
433.43 非傳染性病害Non-infectious diseases
433.431 鹽害Salt injuries
433.432 養(yǎng)分缺乏Nutrient deficiencies
433.5 有害植物與其防治Harmful plant and control
433.7 農業(yè)災害防治法Agricultural disaster control
433.71 人工防治法Manual control
433.72 機械防治法Mechanical control
433.73 農藥防治法Pesticides control 同：化學防治法（Agrochemicals control）農藥配製與其使用、蟲害的化學絕育等入此
433.731 殺菌劑Bactericides
433.732 殺蟲劑Insecticides
433.733 除草劑Herbicides
433.739 其他用途藥劑Other purpose pesticides
