Differences in Nitrogen Accumulation and Nitrogen Utilization Efficiency among Summer Maize Cultivars
Eight local popular summer maize cultivars were studied with two N fertilizer levels(without N supply,with N supply) under field condition.The results showed that significant differences were discovered among cultivars in the yield,aboveground N accumulation,low N tolerance index and N utilization under both two N supply conditions.Compared with other cultivars,Denghai605 and Jinhai604,showed higher grain yield of under both two N supply levels,lower N responsiveness,and higher low N tolerance index.Therefore,two cultivars could be suggested as the ideal maize type with high yield and N utilization,and low N supply demand in local areas.
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NSTL
万方数据
维普
