第六章平原与风沙区林业生 态工程建设技术
第六章 平原与风沙区林业生 态工程建设技术
第一节农田防护林
第一节 农田防护林
This properly designed windbreak will increase the quality and yield of the fruit from this orchard in Michigan
A tree windbreak protects this farmstead from high winds,dust,and drifting snow