基于灰色模型对不同播期优质籼稻品质评价

为了探讨优质稻谷品质在播期间变异特征,以大粒型品种八桂香,小粒型品种桂华占、油占8号、七桂占等4个优质籼型水稻品种为材料,以中粒型品种珍桂矮为对照,进行分期播种,以农业部最新行业标准的一级优质籼稻标准为参考样,利用灰色关联度模型.求得参试品种与参考样的关联度系数,依米质优劣将不同品种排序.结果表明:籼型稻谷粒犁影响稻谷品质优劣.播期的适当推迟对提高稻谷品质有利.品质的优劣与品种密切相关,优质品种是获得优质稻谷的重要前提,但是优质稻谷也受栽培方式和气候影响.稻米品质优劣既受播期影响也受品种、稻谷粒型影响.

Evaluation of Grain Quality of Different Sowing Date Indica Rice Based on Grey Correlation Model

To analyze the variable parameters of Indica rice quality traits,five different cultivars including Baguixiang(long grain),Guihuazhan,Youzhan 8,Qiguizhan(short grain) and Zhanguiai(middle-little grain,CK) and five sowing dates were selected.Main quality characters were determined based on the newest occupation standard of the Ministry of Agriculture.The grain quality from different cultivar and sowing date were evaluated and ranged using the grey correlation model.Properly late sowing date was advantageous ...