灌溉类型对垦区粮食生产影响新分析

摘要

Heilongjiang reclamation area has been formed to different irrigation areas,such as well irrigation area,well and canal mixed area,a few wells irrigation area,well and canal irrigation area, canal irrigation area and rainfall irrigation area.The typical year is selected to analyze the grain production effect and the contribution rate of different irrigation types,and it is concluded that the well irrigation has the biggest contribution in grain production,and canal irrigation has less contribution in the reclamation area.An unknown law is revealed:Development of canal irrigation has no good result as well irrigation for the grain production in the reclamation area,its reason is worthy of studying.But the rainfall irrigation area with less irrigation canal has the least contribution rate on grain production,so every attempt should be made to develop irrigation in the reclamation area.%黑龙江垦区现已形成了以井灌为主、井渠参半、渠灌为主、灌溉很少的井区、井渠区、渠区和雨区的不同灌溉类型区。作者选择典型年分析不同类型区灌溉对粮食生产贡献率的影响，得出井灌是垦区粮食生产最大贡献者，而渠灌对垦区粮食生产贡献小。揭示了一个未知的确有规律：发展渠灌对垦区粮食生产的作用远不如发展井灌，其缘由值得深究；很少灌溉的雨区对垦区年粮食生产贡献率最少，说明对于垦区还需全方位发展灌溉。