TÁC ĐỘNG CỦA THÀNH PHẦN THỨC ĂN TỰ NHIÊN ĐẾN VIỆC LỰA CHỌN BỘ GIỐNG CÁ TRONG HỆ THỐNG CANH TÁC LÚA - CÁ
TÁC ĐỘNG CỦA THÀNH PHẦN THỨC ĂN TỰ NHIÊN ĐẾN VIỆC LỰA CHỌN BỘ GIỐNG CÁ TRONG HỆ THỐNG CANH TÁC LÚA - CÁ
Effect of component natural food on selection of fish breeding in rice - fish systems
This study was conducted at food crops research Institue - Gia Loc - Hai Duong with the purpose of determining the components of natural food as the basis for the selection of fish breeding in rice fish systems. Composition of phytoplankton as food for fish in rice fields include two groups of algae: Green algae (). Total biomass 197,364 ind/L - 392,028 ind /L. Three groups of Zooplankton: Copepoda, Cladocera with biomass from 43,881 to 150,000 individuals /m 3. Zoobenthos including two groups: Oligochaeta worms, mosquito larvae Chromonus, Tendipes with 10.2 g biomass /m2 . Natural food in rice fields have high nutritional content, appropriate farming, silver carp, common carp, tilapia, major carp, grasscarp at the rate of graft respectively 5, 30,20,25,20%.