杂交旱稻丰产节水栽培关键技术研究与集成应用

针对安徽沿淮地区气候特点,通过试验筛选出适宜沿淮地区旱种旱管栽培,丰产性和稳产性较好的旱稻品种5个,节水耐旱型水稻品种7个;明确了沿淮地区以旱优73为代表的杂交旱稻的丰产节水栽培技术:播种期6月5-12日,播种量2.0 kg/667 m~2左右,氮肥用量10~14 kg/667 m~2;在施肥过程中适当降低基蘖肥用量、增施穗粒肥,基、蘖、穗肥比例以4∶4∶2较好。

Study and Integration of Key Techniques for High-yielding and Water-saving Cultivation of Upland Hybrid Rice

In order to clarify the key techniques of high-yielding and water-saving cultivations of upland hybrid rice, the field experi-ments were carried out in the regions along the Huaihe River. 5 upland rice varieties with high and stable yield, and 7 lowland rice varieties with water-saving and drought resistant traits were selected. Further, the key techniques of high-yielding and water-saving cultivations of upland hybrid rice Hanyou 73 were determined in the regions along the Huaihe River:the suitable seeding date ranged from June 5th to 12th, the optimum seeding rate was 2.0 kg/667 m2, the recommended application rate for nitrogen fertilizer was 10～14 kg/667 m2 and 40％ nitrogen fertilizer as basal fertilizer, 40％ nitrogen fertilizer as tillering fertilizer and 20％ nitrogen fertilizer as earing fertilizer.