无人机助力小麦春管 撒药施肥效率比人工高15倍

array(1) { [87950]=> array(2) { [2]=> array(5) { [0]=> string(9) "无人机" [1]=> string(6) "作业" [2]=> string(2) "10" [3]=> string(6) "植保" [4]=> string(6) "喷药" } [4]=> array(1) { [0]=> string(34) "青岛财经日报/青岛财经网" } } }