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本文以河北省南皮县“七万亩”试区为例,采用方差和通径分析的方法,对早稻产量变化在0.36吨每公顷—6.5吨每公顷条件下低洼易涝盐碱地中影响早稻产量的因素进行了分析。结果表明,在这样的条件下,首先应注意保苗及全苗技术,从而保证收获时的单位面积上的穗数,这是获高产的第一因子,其次是提高千粒重的栽培措施,再者是提高每穗粒数的方法。大穗品种不宜在类似条件下推广,而早熟品种则需要引起足够的重视。
Taking the “70,000 mu” trial area in Nanpi County of Hebei Province as an example, the variance and path analysis methods were used to study the effect of early rice yield change on lowland salinization of saline soil under the condition of 0.36 ton per hectare to 6.5 ton per hectare. The factors were analyzed. The results showed that, under such conditions, we should first pay attention to seedling and seedling technology to ensure that the number of spike per unit area at harvest, which is the first factor of high yield, followed by cultivation measures to improve 1000-grain weight, and the other is Methods to increase grain number per spike Large spike varieties should not be promoted under similar conditions, while precocious varieties need to be given sufficient attention.