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单季晚稻的全生育期较长,一生所需的养分也较多,有两个明显的吸肥高峰期,出现在分蘖期和穗分化期,且后期吸肥比前期高,这表明后期更需要穗肥。我们在叶龄施肥的基础上,根据穗分化与叶片节间的同伸关系,应用地上部伸长节间指标,确定穗肥的施用时间和数量。实践证明,这一简单易行的新方法,群众易掌握,能因地、因苗制宜,提高效益。一、增产效果据1981～83年连续三年的对比试验和大面积调查,单季晚稻按地上部伸长节间指标,
Single season late rice has a longer growth period and more nutrients needed in its life. There are two obvious peak periods of fat absorption, which occur at tillering stage and spike differentiation stage, and the late stage of uptake is higher than the previous stage, indicating that the later stage is more Need spike fertilizer. Based on the fertilization of leaf age, according to the relationship between panicle differentiation and internode elongation, we used the internodal elongation internode index to determine the time and amount of panicle fertilizer application. Practice has proved that this simple and easy new method, easy to grasp by the masses, can be due to local conditions, due to seedlings, improve efficiency. First, the effect of increased production According to three consecutive 1981-1983 years of comparative tests and large-scale survey, single-season late rice elongation above the internode index,