论文部分内容阅读
能显示降雨量的种子平时我们很少看到仙人掌开花结籽,事实上仙人掌既开花也结籽。生长在沙漠里的仙人掌,其种子成熟后落地,待降雨后才发芽生长,而且其发芽、生长情况与降雨量、降雨次数有密切关系。到沙漠地带考查的科学家,可根据仙人掌种子的发芽、生长情况来测知每年
The seeds that show rainfall Usually, we rarely see cactus blossom and seed, in fact, both cactus blossom and seed. Cacti grown in the desert, the seeds fall to the ground after maturity, germination and growth until after the rain, and its germination, growth and rainfall, the number of rainfall are closely related. Scientists who study in the desert can detect the annual growth of cactus seeds