低洼易涝盐碱地中影响旱稻产量的因素分析——以河北省南皮县“七万亩”试区为例

The Influencing Factors to Dry Land Rice Production in Salin- Ized and Easily Waterlogged Lowland-A case study from Qiwanmu of Nanpi County, Hebei Province

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。

In this paper the influencing factors to dry land rice production growing on salinized and easily waterlogged lowland was analysed by using analysis of variance and path analysis under the rice yield varied from 0. 36t/ha to 6. 53t/ha. The results showed that the primary factor affecting dry land rice production is the plant density. Therefore, the culturing techniques, which could increase the rice seedling establishment and guarantee high seed germination, are the most important measures for high production of the rice. The second factor is the 1000 seed weight. Then the techniques which could increase the seed weight should also been paid attention to. The third factor affecting the rice yield is the number of glumes per ear. The varieties with long and large head are not suitable to such condition as the results showing,on the other hand attention should be paid to earlier maturity varieties for high yield of rice in this area.