High-yielding Cultural Techniques of Super Hybrid Rice YLY 900 Yielded 15.40 t/hm~2 on a 6.84 hm~2 Scale

YLY 900(short for Y Liangyou 900), was bred with the wide adaptability PTGMS line Y58 S as the female parent and the strong indica restorer line R900 as the male parent, has developed root system, large panicles with plenty of spikelets, high seed set-ting rate, ideal plant type, suitable growth duration, wide adaptability, high and stable yield, good grain quality and multiple resis-tances to abiotic stresses, and made a new record for hybrid rice production with an average yield of 15.40 t/hm2 in a larger area of6.84 hm2 in 2014. In this paper, the characteristics of YLY 900 are introduced and the high-yielding cultivation techniques are de-scribed in details.