小麦矿质营养遗传性差异分析研究

通过２３个小麦品种拔节──孕穗期样品Ｎ等１０种养分的测试分析，分析了小麦品种间矿质养分含量、吸收分布状况、利用效能等差异性。结果表明：小麦品种间矿质养分含量存在显著性差异，品种间拔节──孕穗期倒１──倒４叶片养分含量虽差异很大，但其分布状况却基本一致；小麦品种间矿质营养利用效能也存在差异，淮北地区５个种植品种，以豫麦１８号、豫麦１３的Ｎ、Ｐ、Ｋ利用效能较高，冀麦５４１８利用放能较低。

Analytical Study on Genetic Differences of Wheat Mineral Nutrition

The analytical results of differences in mineral Mutrient content. absorption and distribution, use efficiency among wheat varieties by testing 10 nutrients of 23 varieties of wheat from node elongation stage (NES) to panicle initiation stage (PIS) indicated that the differences in mineral nutrient content were significant among wheat varieties. Although there existed the significant varietical differences in nutrient content of lst to 4th leaves downward from plant top at NES-PIS,the trend of nutrient distribution was basically the same. Use efficiencies of mineral nutrients were significant among wheat varieties. Varieties such as Yumei13 and yumeiB had higher N. P. K use efficiency of the 5 conventional varieties in Huaibei district.