大豆霜霉病; 霜霉病; 霜霉菌

hop downy mildew downy mildew downy grape onion mildew mildew preventive mildew inhibitor areolate mildew mildew resistance frosty mildew mildew proof downy mildew of millet downy mildew of garlic rice downy mildew downy mildew of garpe downy mildew of cucurbits cucumber downy mildew downy mildew of rice downy mildew of soybean corn downy mildew downy mildew of crucifers