不同机插行距对水稻产量的影响

Effects of Different Machine-transplanted Row Spacing on Rice Yield

旨在为改进和研发适合南方丘陵双季稻区的插秧机提供理论依据。通过对双季稻区早晚稻进行人工模拟机插行距试验,对比研究不同行距对水稻产量的影响,结果表明：行距8寸较9寸,早稻增产260.50~382.86 kg/hm2,增产率达4.34%~5.98%,晚稻增产252.90~269.68 kg/hm2,增产率达3.90%~4.25%;行距7寸较9寸,早稻增产139.33~271.03 kg/hm2,增产率达2.32%~4.24%,晚稻增产129.32~202.49 kg/hm2,增产率达2.00%~3.19%;3个行距中8寸的产量最高。同时,对现行9寸行距的插秧机进行了改进,研制出8寸行距插秧机,并进行二晚大田机插试验,结果表明8寸行距插秧机比9寸增产181.83 kg/hm2,增产率达2.56%。

The primary objective of this study was to provide theoretical bases for improve and development rice transplanter in double-rice cropping region of south hilly area.Field experiments were conducted in Jiangxi province in 2010,involving three row spacing in early and late rice.The yields of early and late rice on different row spacing were comparative analyzed.The experimental results indicated that the row spacing in 8 inch compare with 9 inch,yield increased as much as 260.50 to 382.86 kg·hm-2 and increase yield rate by 4.34%~5.98% of early rice.The yield increased 252.90 to 269.68 kg·hm-2 and increase yield rate by 3.90%~4.25% on 8 inch row spacing more than 9 inch of late rice.Compared to 9 inch,the yield increased 139.33 to 271.03 kg·hm-2 and increase yield rate by 2.32%~4.24% in 7 inch row spacing of early rice;and yield increased 129.32 to 202.49 kg·hm-2 and increase yield rate by 2.00%~3.19% of late rice.8 inch row spacing was the highest yield.Improved 9 inch row spacing rice transplanter and made one prototype of 8 inch row spacing rice transplanter.Field experiment test indicated that the yield increased 181.83 kg·hm-2 and increased yield rate by 2.56% of use 8 inch row spacing rice transplanter than 9 inch row spacing rice transplanter in late rice.