A.秕粒、青粒多,出米率低B.莖稈倒折,減產(chǎn)幅度大C.稻殼厚,產(chǎn)量高D.米質(zhì)發(fā)暗無光澤
A.1%~2%B.5%~10%C.10%~15%D.20%
A.篩選B.風(fēng)選C.粒選D.液體比重選