不同犁底层含锰量对小麦、油菜锰营养状况的影响

Effects of available Mn contents in different plow pans on Mn status of wheat and oilseed rape

用模拟土柱的方法进行研究.结果表明,较高的犁底层含锰量对改善小麦的锰营养状况具有重要作用.高锰犁底层处理的两个小麦品种全生育期均未出现缺锰症,且地上部含锰量、籽粒含锰量和籽粒产量也都明显高于低锰犁底层处理.而对缺锰敏感的小麦品种—川麦22号则低含锰量犁底层处理出现了典型的缺锰症状.两个油菜品种在两种犁底层处理下均生长正常,未出现缺锰症,籽粒产量也没有明显差异,说明油菜的耐缺锰能力较强.

The study was carried out with simulated soil columns. The results showed that high available Mn contents in plow pans played an important role in Mn status of wheat, especially for the wheat cultivar (CM22) sensible for low available Mn. However, Mn contents had no significant effect on Mn status and grain yield of two oilseed rapes. This indicated that the two oilseed rapes were more tolerant than the wheat cultivar for low Mn availability on soil.