Status and Prospect of High Yielding Cultivation Researches on China Super Hybrid Rice

This paper is an attempt to summarize the results of high yielding cultivation researches on super hybrid rice in recent years and point out the single rice culture of China super hybrid rice under different ecological conditions in the south of China. China super hybrid rice has the yield 12 t/hm2, growth duration 130~150 d, spikelet number 5.5×104~6.0 ×104/m2, LAI 9~10, plant height 100~110 cm and stronger tillering ability, which shows the potential yield heterosis with adequate panicle number, large panicles, good coordination between sink and source, high fertilizer tolerant and lodging resistance. the physiological basis of high yielding formation, cultivation environments and agronomic techniques under the cultivation conditions of single seedling and sparse planting and increase in nitrogen fertilizer are made clear. Through systematic researches on growth and development, dry matter production, tillering ability, root activity, optimum locations and seasons, high yielding path and the technique system for super hybrid rice, In order to exploit the high yielding potential of super hybrid rice, it is necessary to conduct experimental studies on the coordination between the adequate panicle number and large panicles and their grain filling percentage in the areas of enzyme, hormone, even at molecular level, as well as the optimization of SRI intensive cultivation techniques.