不同机插取秧量对杂交稻生长及产量的影响  

Effects of Different Mechanically Transplanted Seedling Area on Growth and Yield of Hybrid Rice

作　　者：滕飞[1] 陈惠哲[1] 朱德峰[1] 

机构地区：[1]中国水稻研究所,浙江杭州311400

出　　处：《作物杂志》2015年第3期79-82,共4页Crops

基　　金：国家科技支撑计划项目(2012BAD07B02);科技部科研院所技术开发研究专项(2013EG134237);浙江三农六方科技协作计划项目(SN201206)

摘　　要：为明确杂交稻机插适宜取秧量,选取大面积种植的杂交稻品种Y两优1号及中浙优1号为材料,设置2、4、6、8、10档5个机插取秧量,研究其对杂交稻生长及产量的影响。结果表明,随着机插取秧量的增大,杂交稻机插质量明显上升,漏秧率显著减小,田间基本苗数及群体茎蘖数均有所增加。同时,机插取秧量的增大引起植株群体干物质积累量增加,但其干物质主要集中在茎叶部位,穗部干物质积累量没有明显提高。从最终产量表现来看,随着机插取秧量的增大,产量呈先上升后下降的趋势,较小的取秧量导致田间水稻有效穗数不足,而较大的取秧量则降低了水稻结实率。综合两品种试验结果,机插最适取秧量为6档,成穗率高的品种可降至4档。For exploring the suitable transplanting seedling area of hybrid rice under mechanically transplanted conditions, both rice hybrids of Yliangyou 1 and Zhongzheyou 1 were taken as materials to study the growth and yield of hybrid rice with an experimental design of 5 transplanting seedling areas （2,4,6,8 and 10 speeds）. The results showed as follows ： With the increasing of transplanting seedling area, the effectiveness of mechanical transplan- ting was increased and the leakage rate of seedlings significantly reduced. The basic seedling number and number of stems and tillers were increased. With the increasing of transplanting seedling area, the dry matter accumulation of plants was increased, but the dry matter was mostly transported to stems and leaves, and had little contribution to grain yield. From the performance of final yield, the decreasing of transplanting seedling area could reduce the effective panicle number significantly, and the grain yield decreased. However, the increasing the transplanting seedling area reduced the seed setting percentage. Therefore, the favorable seedling area was 4 or 6 speed.

关 键 词：杂交稻 机插秧 取秧量 干物质积累 产量 

分 类 号：S511.41[农业科学—作物学]