强化栽培水稻产量形成特点及其生态因素研究

Yield formation characters of a hybrid rice variety under SRI cultivation and it secological factors.

对水稻强化栽培的产量形成特点及其生态因素研究结果表明 ,在我国南京生态条件下早播水稻因温度偏低 ,强化栽培并非能发挥其分蘖多的优势 ,晚播水稻虽能满足其加快分蘖的温度要求 ,但水稻生育后期热量不足 ,使水稻结实率和粒重受到影响。对马达加斯加和我国南方稻区气象资料气候相似分析表明 ,水稻强化栽培技术适用于我国海南、广西、广东省 (区 )沿海和云贵高原低海拔地区水稻种植。

Yield formation characters of a hybrid rice variety under SRI (System of Rice Intensification) cultivation mode and its ecological factors show that in Nanjing the early sowing rice can not fully take advantage of more -tillers of SRI into full play due to the lower temperature;although the late sowing rice can meet the demand of temperature at tillering stage, heat in the l ate growth per iod is not sufficient,thus lowering the rate of seed set and 1000-grain weight.A nalysis on the adaptability of SRI through meteorological data of Madagascar and the southern rice growing region of China suggests that the SRI cultivation met hod may be suitable for the coastal rice growing regions of Hainan,Guangdong,Gua ngxi provinces region and the lower altitude regions of the Yunnan- Guizhou Plateau.