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应用生态学报 ›› 1999, Vol. 10 ›› Issue (2): 179-182.

• 研究论文 • 上一篇    下一篇

土壤施Mn深度对不同基因型小麦缺Mn的影响

刘学军, 吕世华, 张福锁, 毛达如   

  1. 中国农业大学植物营养系, 北京 100094
  • 收稿日期:1997-06-16 修回日期:1997-08-12 出版日期:1999-03-25 发布日期:1999-03-25
  • 通讯作者: 刘学军,男,博士,1969年出生.现为中国农业大学植物营养系讲师,主要从事土壤营养元素的化学行为及生物有效性方面工作,发表论文近10篇.
  • 基金资助:

    国家杰出人才基金资助项目(39425013).

Effect of Mn application depth on Mn deficiency of two wheat genotypes

Liu Xuejun, Lü Shihua, Zhang Fusuo, Mao Daru   

  1. Department of Plant Nutrition, China Agricultural University, Beijing 100094
  • Received:1997-06-16 Revised:1997-08-12 Online:1999-03-25 Published:1999-03-25

摘要: 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含量均存在着显着差异。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.

关键词: 施Mn深度, 小麦基因型, 缺Mn耐性, 苹果园土壤, 施肥方式, 园龄, 交换性钙, 水溶性钙, 碳酸钙

Abstract: Simulated Mn deficient soil column studies with wheat show that the Mn deficient symptom, grain yield, root system distribution and Mn content of two genotypes (Chuanmai 22 and genotype 3317) were greatly affected by Mn application depth. The yields of both genotypes were obviously increased with the application depth of Mn fertilizer, and the increment of Chuanmai 22 was higher than genotype 3317. It was suggested that the higher tolerance to Mn deficiency of genotype 3317 than Chuanmai 22 was related to the higher percentage of its roots distributing in the middle and lower soil layers and to the stronger capacity of absorbing Mn from soil. It was also found that the Mn deficient symptoms of wheat at seedling stage could be disappeared after Mn fertilizer was applied at mid late stage in the middle and lower soil layers, indicating that applying Mn fertilizer at mid late stage played an important role to the formation of wheat yields.

Key words: Mn application depth, Wheat genotype, Tolerance to Mn deficiency, apple orchard soil, fertilizing regime, orchard planting age, exchangeable calcium, water-soluble calcium, calcium carbonate