5IIRI.IRRI towards 2000 and beyond[R].In:IRRI.IRRI Report.Manila:Los Banos,1989:36-37.
6Jennings P R.Breeding for agronomic and morphological characteristics-height lodging resistance and nitrogen response[A].1RRI.Rice Improvement[C].Manila:Los Banos,1979:79-81.
7Yoshita S.Physiological aspects of grain yield[J].Annual Review of Plant Physiology,1972(23):437-464.