Soil loss of the pure contour hedgerow plot was 37.71% of that of the purecrop plot.
单纯等高植物篱处理小区的侵蚀量仅为在相近雨强及雨量条件下对照坡耕地的37 71%。
2
Pure biological extraction, do not contain easy-damage fruit surface material and chemical additive, safe to the leaf surface of crop and the fruit surface.
纯生物提取,不含易破坏果面物质和化学添加剂,对作物叶面和果面安全。
3
Methods: the effects of dry crop food preservative on paddy mould at different concentration were measured by on-the-spot experiment, mimic experiment and suffocation to mould pure culture.