Cd胁迫下复合叶面肥对水稻幼苗生长及Cd积累特征的影响
Effects of foliage fertilizer on growth and cadmium accumulation characteristics of rice seedlings in Cd pollution
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摘要: 为探究叶面喷施肥料是否可有效缓解重金属对水稻的毒害作用,以湘晚籼17和五优369基因型水稻品种为材料,通过盆栽试验法测定复合叶面肥对土壤不同浓度Cd胁迫下水稻幼苗的生长情况和地上、地下部Cd积累效应。结果表明:喷施自制复合叶面肥不仅能促进2种水稻幼苗株高和干重的增长,且能有效地抑制水稻地上部Cd积累,对湘晚籼17的抑制效果优于五优369。这说明多养分复合叶面肥对水稻Cd积累的调控效果可能与水稻自身品种差异和土壤Cd的浓度有关。Abstract: In order to investigate whether spraying foliar fertilizer can relieve the toxic effect of heavy metals on rice, and using the rice varieties of Xiangwanxian 17 and Wuyou 369 as materials, the effects of multi-foliar fertilizers on seedling growth and the accumulation of Cd in shoots and roots parts of rice under different soil Cd concentrations were determined by pot experiments. The results show that spraying multi-foliar fertilizers can not only promote the growth of plant height and dry weight of the two rice seedlings, but also effectively inhibit the accumulation of Cd in the shoots of rice. The inhibitory effect on Xiangwanxian 17 is better than that of Wuyou 369. It is indicated that the regulation effect of multi-nutrients foliar fertilizers on rice Cd accumulation may be related to the difference of rice varieties and soil Cd concentrations.