1983年至1985年在以色列进行田间试验,鉴定经巴西固氮螺菌接种对早地高粱生长、水分状况和产量劝效应.结果表明,接种处理后主要是通过改善土壤水分的利用而提高了产量。在过去10年里,研究重点放在从热带禾本科作物根系中分离固氮螺菌属(Azospirillum)的细菌。早期的研究集中在这些细菌的生物固氮能力上,这种能力与禾谷类作物根系有关联。巳采用多种方法对接种株含氮量的增益作定量鉴定。然而,利用~(15)已证明,所观察到的旺盛生长和含氮量增加,并非仅是生物固氮作 Field experiments were conducted in Israel from 1983 to 1985 to identify the effects of Azadirachta inoculation on the growth, water status and yield of sorghum in early summer.The results showed that the inoculation improved the yield mainly by improving the utilization of soil moisture. Over the past decade, research has focused on the isolation of Azospirillum bacteria from the roots of tropical Poaceae crops. Earlier research has focused on the biological nitrogen fixation capacity of these bacteria, which is linked to the root system of cereals. A variety of methods have been used to quantify the gain of the nitrogen content of the inoculated plants. However, using ~ (15) has demonstrated that the observed vigorous growth and increased nitrogen content are not just biological nitrogen fixation