Effect of the Technigue of Rice Direct Sowing with Seeds Twisted in Paper Rope on Rice Yield Character

In this paper,a technigue of rice direct sowing with seeds twisted in paper rope(seed rope) was put forward.Field contrast experiments with 4 treatments and 5 repetitions were conducted.The plants(plants/m2),the panicles(panicles/m2),grains per panicles,shrunken grains per panicle,plant height,panicle length,1000-grainweitht,water and seed consumption,productivity,and cost were measured.One-way ANOVA for panicle setting rate,shrunken grains rate,plant height,panicle length,rate of grains weight to stalks,and yield were done with the software of SPSS 13.0 for windows.The experiment results showed that there was no significant difference for the yield among the whole treatments.Contrasting to general transplanting(CK),water was saved by 4500 m3·hm-2 for the treatment of rice direct sowing;rice seed was saved by 20~35kg·hm-2 for the treatments of direct sowing in dry land with seed rope and direct sowing in paddy field with seed rope,and for the general direct sowing,respectively.Their seed saved rates were 33%~47% and 17%~33% respectively.The productivity was 0.67hm2·d-1 for the general direct sowing and direct sowing in dry land with seed rope,and 0.53hm2·d-1 for the direct sowing in paddy field with seed rope was,they were 10 times and 8 times,comparing to that of general transplanting(CK).The saved costs for the direct sowing in paddy field with seed rope,direct sowing in dry land with seed rope and general direct sowing were 1110.8Yuan·hm-2,1119.0Yuan·hm-2 and 1246.5Yuan·hm-2,respectively.