A pet dog as industry is gradually formed breeding, scientific breeding, quality improvement, dog training, display competitions, dog food, dogs with, dog medicine, medical industry structure chain.
So the important basis that the dissection structure of the poplar timber can be cultivated as the index, seed selection breeding and orientation of appraising the poplar material, quality.
因此杨树木材的解剖结构可以作为评价杨树材性、品质的指标和选种育种及定向培育的重要依据。
3
Based on the yield structure mode, the breeding goal and strategy of super wheat also were brought forward aiming at different ecotopes and physiological characteristics of wheat.