EFFECT OF ALUMINUM ON GROWTH AND CHEMICAL COMPOSITION OF SOME TROPICAL AND TEMPERATE PASTURE LEGUMES
EFFECT OF ALUMINUM ON GROWTH AND CHEMICAL COMPOSITION OF SOME TROPICAL AND TEMPERATE PASTURE LEGUMES
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DOI：
10.1071/ar9730325
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发表时间：
1973-01-01
影响因子：
--
通讯作者：
SANDLAND, RL
中科院分区：
文献类型：
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作者：
ANDREW, CS;JOHNSON, AD;SANDLAND, RL
铝（0、0.5、1.0、2.0 p. p.m.）研究了在含磷浓度为2 ppm的培养液中生长的5种热带和6种温带豆科牧草的干物质生产（顶部和根部）和化学成分的变化。热带植物对铝的耐受性顺序为：山蚂蝗=大花蚂蝗=百脉根=柱花草=野生大豆>紫花苜蓿;温带植物对铝的耐受性顺序为：红车轴草=三叶草>白三叶=盾叶苜蓿=蒺藜苜蓿=紫花苜蓿。在耐受性物种中，0.5 ppm铝处理的植物材料的产量大于对照。耐受性物种的顶部/根重量比不受处理的影响;敏感物种的比率降低。铝处理对植物中铝、氮、磷、钾、钙、镁和钠浓度的影响。受影响的主要营养素是钙和磷。铝处理降低了所有物种顶部的钙浓度，钙、镁和钾浓度之间存在相互关系。在敏感的物种铝处理减少磷在植物顶部和根;在一些耐受性的物种中，中间铝处理增加磷浓度在植物顶部;然而，高铝处理降低磷浓度。
The effects of aluminium (0, 0.5, 1.0, 2.0 p.p.m.) on the dry matter production (tops and roots) and chemical composition of five tropical and six temperate pasture legumes grown in a cultu1.e solution containing 2 p.p.m. phosphorus were ascertained. The tolerances of the tropical species to aluminium were in the order Desmodiunz uncinatum = Macroptilium latlzyyuoides = Lotonis bainesii = Stylosanthes humilis = Glycine wightii > Medicago sativa, and temperate species in the order Trifolium rueppellianum= Trifolium sernipilosum > Trifolium repens = Medicago scutellata = Medicago truncatula = Medicago sativa. In the tolerant species the yield of plant material from the 0.5 p.p.m. aluminium treatment was greater than from the control. The top/root weight ratios of the tolerant species were unaffected by treatment; the ratios of the sensitive species were reduced. The effect of aluminium treatment on aluminium, nitrogen, phosphorus, potassium, calcium, magnesium, and sodium concentrations in the plants are given. The principal nutrients to be affected were calcium and phosphorus. Aluminium treatment reduced the calcium concentrations in the tops of all species and there were reciprocal relationships between calcium, magnesium, and potassium concentrations. In the sensitive species aluminium treatment reduced phosphorus in the plant tops and roots; in some of the tolerant species the intermediate aluminium treatment increased the phosphorus concentration in the plant tops; however, the high aluminium treatment reduced the phosphorus concentration.