论文部分内容阅读
以缺Ｍｎ土壤为基质进行的小麦模拟土柱试验结果表明，不同施Ｍｎ深度条件下３３１７和川麦２２２个小麦基因型的缺Ｍｎ症、产量、根系分布和体内Ｍｎ含量均存在着显著差异．随着施Ｍｎ深度的增加，Ｍｎ肥的增产效果更为明显，川麦２２施Ｍｎ的增产幅度高于３３１７．初步认为，３３１７耐缺Ｍｎ能力高于川麦２２，与其根系在中下部土层分布比例高，吸Ｍｎ能力强有关．土柱试验发现小麦苗期的缺Ｍｎ症在中下部土层供Ｍｎ时明显恢复，表明中后期供Ｍｎ对小麦产量的形成有至关重要的作用
The simulated soil column with wheat lacking Mn as substrate showed that Mn deficiency, yield, root distribution and Mn content of 3317 and Chuanmai 222 wheat genotypes were significantly different under different Mn application depths. With the increase of Mn application, the effect of increasing Mn fertilization was more obvious. The yield increase of Mn of Chuanmai 22 was higher than that of 3317. It is preliminarily believed that the ability of 3317 to tolerant Mn deficiency is higher than that of Chuanmai 22, which is related to the high proportion of root distribution in the middle and lower soil layers and the high Mn absorption capacity. The soil column test found that Mn deficiency in wheat seedling obviously recovered when supplied Mn in the middle and lower soil layers, indicating that Mn supply to the mid and late stages is crucial to the wheat yield formation