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由于遗传基础不同,水稻品种间存在着形态特征、生理、生态特性上的差异,将生育期、株高相同或相近的品种(杂交稻组合)混植,有可能在不影响农事操作的前提下扩大群体的遗传异质性,削弱单植状况下个体间的强烈竞争,提高群体的适应性,达到进一步高产稳产的目的。为此,我们于1983—1984年进行了水稻品种混合栽培试验。
Due to different genetic bases, there are differences in morphological, physiological and ecological characteristics among rice cultivars. It is possible to expand the hybrid rice varieties with the same or similar growth period and plant height (hybrid rice combinations) without increasing the farm operation The genetic heterogeneity of the population weakens the strong competition among individuals under single plantation conditions and enhances the population adaptability so as to achieve the purpose of further yielding and high yield. To this end, we conducted a mixed rice cultivation experiment in 1983-1984.