关键词: 土壤 氮素 磷素 吸附 解吸附, 土壤 氮素 磷素 吸附 解吸附

Abstract:

Since 1987，by using of recoverable satellite (15 times) and spacecraft (6 times) to conduct bio-carrying test, a group of new fine varieties and lines have been developed successfully, of which more than 30 have been examined and approved by authorities concerned at provincial level and above. They have been applied and popularized widely at different places in China and significant socio-economic benefits have been gained. Meanwhile, great progress has also been made on the study of the mechanism of space mutation breeding. The practice has proved that the space mutation breeding is a new way for high-tech breeding which has combined astronautics technology with conventional breeding technology. It has played a significantly role in speeding up breeding process, shortening breeding cycle, and improving the efficiency of breeding.