During the breeding season South Georgia hosts the densest mass of Marine mammals on Earth.
在繁殖季节,南乔治亚成为地球上海洋哺乳动物最密集的群体栖息地。
2
The program of the new cotton breeding method of mass selection-mass crossing is described and the results of breeding cotton is presented in this paper.
本文详细叙述了棉花混选—混交新育种方法的程序及其育种效果。
3
Responses of main characters of upland cotton to mass selection-mass crossing breeding system were studied.