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首页> 外文期刊>Plant and Soil >Deep placement of Mn fertiliser on a sandy soil increased grain yield andreduced split seed in Lupinus angustifolius
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Deep placement of Mn fertiliser on a sandy soil increased grain yield andreduced split seed in Lupinus angustifolius

机译：锰肥在沙质土壤上的深施提高了羽扇豆的粮食产量并减少了裂粒种子

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摘要

Experiments were conducted over two years with Lupinus angustifolius L. on a site with acid sandy soil near Esperance, Western Australia to determine if deep placed manganese fertilizer increases lupin grain yield. Manganese at 4 and 8 kg ha(-1) was placed below the surface immediately before sowing at 4, 20 and 30 cm and 4, 8, 12, 16 and 20 cm in 1987 and 1988 respectively. Foliar Mn applied at 1 kg ha(-1) when the first order laterals were in mid-flowering stage, was also compared. Increasing the depth of Mn placement increased grain yield in both years. The deepest placed Mn increased grain yields by 255 kg ha(-1) (10%) and 430 kg ha(-1) (106%) in year 1 and year 2 over the shallow (4 cm) placed Mn. The higher responses to deep placed Mn occurred in year 2, the year with the driest spring and most intense aphid infestations. Foliar applied Mn was as effective as most deep placed Mn treatments, except for the highest rate (8 kg ha(-1)) at the greatest depth (20 cm) in year 2. The higher rate of applied Mn gave the best grain yields.
机译：在西澳大利亚州埃斯佩兰斯附近酸性沙质土壤的地方，用羽扇豆进行了为期两年的实验，以确定深施的锰肥是否会增加羽扇豆的产量。分别于1987年和1988年将4 kg和8 kg ha（-1）的锰分别置于4、20和30 cm和4、8、12、16和20 cm播种之前，将其置于地表以下。还比较了当一级侧枝处于开花中期时，以1 kg ha（-1）施用的叶面Mn。两年中增加Mn的沉积深度均增加了谷物产量。在第1年和第2年，最浅处的Mn在浅处（4 cm）的Mn上可使谷物产量增加255 kg ha（-1）（10％）和430 kg ha（-1）（106％）。对深部锰的较高响应发生在第2年，春季最干燥，蚜虫侵害最严重。叶面施用的锰与大多数深施锰处理一样有效，除了在第二年最大深度（20厘米）处最高施用量（8 kg ha（-1））外。施用锰的比率越高，谷物的产量越好。

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