| The pairing method and the plant analysis were adopted to study the effects of water penetrations in furrow irrigations with different water amounts on tiller growth and dry matter accumulation of directly sown rice in rice farming with furrow irrigation and conventional rice farming. The results revealed that directly sown at different dates, rice differed in tiller growth, dry matter accumulation, canopy leaf characters, and yield among different treatments to some extent. In treatment 1 (furrow irrigation saving water by 38.6%) rice tillers grew well, had good quality, accumulated high amount of dry matter and formed a high chlorophyll percentage in canopy leaf so that its seed-setting-spike number, spike length, seed number per spike, heavy kernel number per spike and 1000-kernel weight were significantly higher than those in the control and the rice yield rose by 8.74%. |