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我地多年来大面积种植杂交水稻“特优63”,摸清其产量结构特征及各构成因素在产量形成中所起的作用,为建立高产栽培技术体系提供科学依据。1方法在最近五年各季成熟期,按好中差比例抽测一部分田,每丘田分五点割取1.6m2稻株考查各产量构成因素,统计变异系数,并用每m2穗数X1、每
Over the years, I have planted a large area of hybrid rice “Te You 63” to find out the characteristics of its yield structure and the role of its components in the formation of yield, and provide a scientific basis for establishing a high-yielding cultivation technology system. 1 Method In the last five years of each season maturity, according to the proportion of poor sampling of part of the field, mulberry field at five points to take 1.6m2 rice plants to examine the factors of yield, statistical coefficient of variation, and with the number of spikes per m2 X1, each