东北半干旱区节水抗旱技术集成对玉米产量及水分利用率的影响

在黑龙江省甘南县种植玉米,研究坐水种、苗期补灌和垄向区田保水技术集成对玉米产量及水分利用效率的影响。在全生育期对土壤水分指标及玉米生育动态进行观测并对数据进行统计分析。结果表明:坐水、补水及区田对产量影响都显著,但水分与区田的交互作用不明显;区田对提高水分利用效率起到了较好的效果。3项技术集成在东北半干旱地区起到了增产、提高水分利用效率的作用。图6,表5,参7。

Northeast semi-arid areas water-saving and anti-drought combined technological measure's effects on maize produce and WUE

The author planted maize in Gannan county,Heilongjiang province,and studied the influences of water-saving and anti-drought combined technological measure (bed-irrigating sowing,seedling stage mending irrigation,and ridge plotted field water conservation) on maize yield formation factors and water utilization efficiency (WUE).The author observed the soil water indexes and maize bearing trends of the whole bearing period and made statistic and analyzed on these data.According to the results,bed-irrigating sowing,seedling stage mending irrigation and ridge plotted field have rather better effects,but the mutual affects of water and ridge plotted field were not very evidence; ridge plotted field had better effect on the enhancement of WUE.These three technology integration had very good effects on produce increase and WUE improvement in northeast semi-arid areas.