一、混杂情况碧玉麦是平罗县最受群众欢迎的优良品种,它的播种面积占全县小麦播种面的95%以上。它不仅具备增产、稳产、抗逆性强等优点,而且品质好。但近几年来由于忽视了群众性的选种和缺乏严格的种子保管制度,使碧玉麦日趋混杂,严重地影响良种性能的发挥,群众说:碧玉麦“变了”、“退化了”。品种的混杂是形成小麦产量下降和品质变劣 First, the mixed situation Jasper is Pingluo County, the most popular fine varieties, it sown area of ​​the county sown more than 95% of wheat. It not only has the advantages of increased production, stable production, strong resistance, and good quality. In recent years, due to the neglect of the mass selection and the lack of strict seed storage system, jasper is increasingly mixed and seriously affecting the performance of the thoroughbreds. The masses said: jasper wheat has changed and degradation has occurred ". Variety is the formation of mixed wheat yield decline and deterioration