multiple
adj.
多樣的,多重的
n.
倍數(shù),若干
v.
成倍增加
在此我理解multiple是成倍的,成倍減少保護區(qū)的產(chǎn)品
是指玉米種子,根據(jù)下面一段話意思,好象減少到5%
THE NUMBER of refuge acres required for crops from multi-stacked seeds is decreasing thanks to new technology from seed companies.The first big drop in refuge acres comes with the new SmartStax seed that needs only a 5% refuge compared to 20% for other traited seed.Codeveloped by Monsanto and Dow AgroSciences,SmartStax will be widely available for planting next year.