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高产栽培的研究,可以从高产栽培技术特别是肥水技术和看苗诊断指标两方面着手。这二者之间,技术只是一个掌握的原则,在具体应用上,及时地决定施肥期、施肥量与排灌技术,主要依靠看苗诊断,充分利用“肥”“水”的相辅相成作用。全国农业劳动模范陈永康,在长期的生产实践中,积累了一套适于长江下游地区的单季晚粳高产栽培经验。目前由于农业科学工作者的总结,基本上已经明确了三项指标之间的关系及其应用条件,在实践上也得到了验证。可以认为,这种作物诊断的研究方法,至少在稻麦两种作物中是值得推广的。应用这种方法,寻找适于本地区主要水稻品种的看苗诊断指标,是具有现实意义的。这里仅就三项指标测定的意义及其表示方法介绍于后,以供参考。
High-yielding cultivation can be developed from high-yielding cultivation techniques, especially fertilizer and water technology and seedling diagnosis indicators. Between these two technologies, technology is only a master principle. In specific applications, timely determination of fertilization period, fertilizer amount and irrigation and drainage technology depends mainly on the diagnosis of seedlings and the full utilization of the roles of “fertilizer” and “water”. In the long-term production practice, Chen Yongkang, a model agricultural worker in the country, has accumulated a set of high-yielding single-season japonica cultivation experiences suitable for the lower reaches of the Yangtze River. At present, due to the conclusion of agricultural science workers, basically the relationship between the three indicators and their application conditions have been clearly defined and they have also been validated in practice. It can be argued that this method of crop diagnosis is at least worth promoting in both rice and wheat crops. It is of practical significance to apply this method to find the diagnostic indexes of seedlings suitable for the main rice varieties in this area. Here only the significance of the three indicators measured and its presentation in the later, for reference.