Seedlings of early rice You I 54 and late rice Boyou 938 were raised on non-woven fabric clothes in Qinzhou City in 2006.The results showed that the seedling raising techniques is characterized by saving seeds,labors and seedling plastic pot,with the yield and income increasing significantly.Applying non-woven fabric clothes to raise seedlings,the yield of early rice increased 399kg/hm2 with increasing rate of 8.3%,as compared to the control (seedling raising with plastic pot),and that of late rice increased 489kg/hm2 with increasing rate of 7.8%.The yield increased 699kg/hm2 with increasing rate of 11.6%,as compared to the treatment for 10 days later broadcast in late rice.The main causes for yield increasing was that raising on non-woven fabric clothes could improve rice seedling quality,increase the height and width of pseudostem,the number of root per plant and especially the tillering ability of seedling.The seedling was higher than the control,its tillering was earlier and much more,and the enough total number of tillers in the field could be reached earlier.Because of earlier broadcasting,seedling raising on non-woven fabric clothes could be more favor of elongating the vegetative growth of rice and increasing the accumulation of dry matter,which is suitable in raising vigorous old seedling ahead of season to avoid the damage of cold dew wind for later rice.
试验结果表明,稻草还田免耕抛秧比常耕抛秧增产5.83%~8.70%,每公顷节约用水882.3~1 185.0 m3,节水22.37%~42.63%。节水主要是节约了耕田用水,耕田用水约是免耕泡田用水的2.63倍,本田用水相差不大,早稻节水比晚稻明显。
