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水稻受亚铁中毒危害是我国南方各省湿田土壤中常见的一种稻作障碍。经多次研究表明:土壤中缺钾和偏施化学氮肥的情况下,水稻更易受亚铁的中毒危害。据调查,水稻亚铁中毒症的形态特征,往往受其他环境因素的干扰而发生变化。所以单凭形态诊断就有困难。如果在形态和环境诊断的基础上,再配以化学速测手段,则对病症的确诊是有所助益的。在国外,对水稻受铁的毒害诊断,大都以分析病叶的全铁量作为依据。但手续复杂,需
Damage to rice by ferrous poisoning is a common obstacle in paddy soils in southern provinces of China. After several studies have shown that: the soil potassium deficiency and partial application of chemical nitrogen fertilizer, rice is more susceptible to the poisoning of ferrous iron. According to the survey, the morphological characteristics of rice ferrous poisonings are often subject to interference by other environmental factors. Therefore, diagnosis alone has difficulty. If the form and environment based on the diagnosis, coupled with rapid chemical tests, then the diagnosis of the disease is helpful. Abroad, the diagnosis of rice poisoning by iron mostly based on the analysis of the total iron content of diseased leaves. However, the procedure is complicated and required