| 耕作施肥措施对水旱轮作土壤小麦缺锰的影响 |
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| 引用本文： | 刘学军,张福锁,毛达如,吕世华. 耕作施肥措施对水旱轮作土壤小麦缺锰的影响[J]. 中国农业大学学报, 1998, 0(Z4) |
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| 作者姓名： | 刘学军 张福锁 毛达如 吕世华 |
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| 作者单位： | 中国农业大学植物营养系;四川省农科院土肥所 北京; |
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| 摘 要： | 利用田间试验研究了不同耕作施肥措施对四川水早轮作土壤小麦缺锰的影响。结果表明,在缺锰条件下喷施锰肥、深耕均显著减轻小麦缺锰症状、改善小麦锰营养,从而提高籽粒产量;秸秆覆盖和猪粪对小麦缺锰症状影响相对较小,小麦产量略高于对照或与对照持平。各处理的整体效果依次为:喷施锰肥>深耕>稻秸覆盖>猪粪和对照。以上结果说明,水早轮作土壤上小麦缺锰与根系不能有效利用底层土壤中的有效锰有关。因此,促进小麦根系下扎及其利用底层土壤有效锰的能力将是避免水早轮作田小麦缺锰的重要途径。不同基因型小麦比较,耐缺锰基因型3317的缺锰症状较轻,植株地上部锰累积量高,而锰敏感基因型川麦22则正好相反,表明3317较强的吸收和累积锰能力正是其耐缺锰的基础。这也从另一侧面说明了利用小麦根系潜力、活化吸收土壤锰在解决水早轮作土壤中小麦缺锰现象中的重要性。
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| 关 键 词： | 施肥耕作措施 小麦 缺锰 |
Influence of Different Tillage and Fertilization Methods on Mn Deficiency in Wheat under Rice-Wheat Rotation |
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| Abstract: | The influence of different tillage and fertilization methods on Mn deficiency in wheat in soil with rice-wheat rotation was studied in Sichuan province.The results showed that Mn fertilizer(MN)dressing and deep plough(DP)can significantly alleviate the symp- tom of Mn deficiency and improve grain yields of two wheat genotypes,while rice straw mulching(RS)and pig manure(PM)application being without obvious effects campared with check(CK).This effect ranks following such a sequence:MN>PM>RS>PM and CK.The abov... |
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| Keywords: | measures of fertilizer dressing and ploughing wheat Mn deficiency |
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