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在农业学大寨的高潮中,群众性的科学实验蓬勃发展。合理施肥是群众性科学实验的主要项目之一,肥料田间试验是一切合理施肥的主要依据,特别对于磷钾肥,由于在一个生产队范围内,不同田块土壤中磷钾水平可相差数倍,从而磷钾肥的效果也有很大差异。为了避免盲目施用磷钾肥,需要进行肥料试验。但是常用的大田试验方法,不太适应群众性科学实验的要求,为此,我们在总结群众水稻塞秧蔸经验的基础上,设计了一种水
In the climax of Dazhai in agriculture, the mass scientific experiments have flourished. Reasonable fertilization is one of the major projects of mass science experiments. Fertilizer field trials are the main basis for all reasonable fertilization. Especially for phosphorus and potassium fertilizers, because the phosphorus and potassium levels in different plots of soils can be several times different within a production team, Thus the effect of phosphorus and potassium are also very different. In order to avoid the blind application of phosphorus and potassium fertilizer, fertilizer testing is required. However, the common field test methods do not meet the requirements of mass scientific experiments. Therefore, on the basis of summing up the experience of mass rice seedlings, we designed a water