... belong to NanB2O3, it has good antiseptic and disinfectant , pesticide, and is also effect to prevention of powdery ... rapeseed, tobacco,flax, peanut, oil palm, and tea etc.Field crops: wheat, rice, maize, and sorghum etc.Vegetables: Chinese cabbage, cucumber ... rapeseed, tobacco,flax, peanut, oil palm, and tea etc.Field crops: wheat, rice, maize, and sorghum etc.Vegetables: Chinese cabbage, cucumber ...