ecosystems approach是什么意思

用法例句

The rice male sterile plants with eui gene (eA line) and the ones without eui genes (A line) were treated by several different concentrations of "920".

用不同浓度的“92 0”对含eui1基因的水稻长穗颈不育系 (eA系 )与不含该基因的不育系 (A系 )进行处理 ,收获的种子储藏 6个月、 9个月和 12个月后分别测试发芽率和发芽势。

Breeding of eui-CMS Line "Ji eA" in Indica Rice;

籼型长穗颈不育系吉eA的选育