Effects of Plant Spacing and Finger Sticking Area Settings for Machine Transplanting on Yield of Double-season Early Rice  

不同机插株距和取秧面积对双季早稻产量的影响（英文）

作　　者：李木英[1] 黄程宽 谭雪明[1] 潘晓华[1] 石庆华[1] 

机构地区：[1]作物生理生态与遗传育种教育部重点实验室/江西省作物生理生态与遗传育种重点实验室/江西农业大学双季稻现代化生产协同创新中心,江西南昌330045

出　　处：《Agricultural Science & Technology》2016年第5期1089-1095,共7页农业科学与技术（英文版）

基　　金：国家"十二五"科技支撑计划项目(2011BAD16B04);江西省"555"领军人才项目;农业部超级稻专项~~

摘　　要：The effects of rice transplanters＇ transplanting settings（plant spacing and finger sticking area） on rice yield were investigated in two early-season rice cultivars：hybrid rice cultivar（Zhuliangyou 819） and conventional rice cultivar（Zhongjiazao 17）.The results showed that,different transplanting settings resulted in different numbers of transplanted basic seedlings,and the rice yield was significantly correlated with the number of transplanted basic seedlings.The number of transplanted basic seedlings increased with the decrease of plant spacing and the increase of finger sticking area.The rate of lost hills of machine transplanting decreased with the increase of finger sticking area.The leaf area index and amount of dry matter accumulation were highly correlated with the number of transplanted basic seedlings.The average yield of the rice transplanted with a plant spacing of11.5 cm was higher than that with a plant spacing of 13.8 cm.In the field transplanted with the rice under the plant spacing of 13.8 cm,the rice yield increased with the increase of finger sticking area,and the finger sticking area of 2.23 cm2 showed the highest rice yield of 8 174.16 kg/hm2 of Zhuliangyou 819 and 7 925.54kg/hm2 of Zhongjiaozao17.In the field transplanted with the rice under the plant spacing of 11.5 cm,the rice yield was the highest with the finger sticking area of 1.83 cm2,and then decreased with the large finger sticking area.Under the plant spacing of 11.5 cm,the highest rice yields of Zhuliangyou 819 and Zhongjiaozao17 were 8 492.94 kg/hm2 and 8 000.23 kg/hm2,respectively.Therefore,the preferred machine transplanting settings for double-season early rice are a plant spacing of11.5 cm and a finger sticking area of 1.83 cm2,while the finger sticking area should be increased to 2.23 cm2 for conventional rice cultivars.选用株两优819和中嘉早17为供试品种,通过不同株距和取秧面积的机插移栽,探讨机插规格对早稻产量的影响。结果表明,不同机插规格导致不同基本苗数,产量与移栽基本苗数显著相关。基本苗数随移栽株距的减小和取秧面积的增大而增多。机插漏蔸率随着取秧面积的增加下降。叶面积指数、干物质总积累量的大小与机插不同规格的基本苗数量高度相关。株距11.5 cm处理的平均产量高于株距13.8 cm处理的平均产量。株距13.8 cm处理中,随着取秧面积增大产量提高,产量最高的取秧面积是2.31 cm^2,株两优819产量为8 174.16 kg/hm^2、中嘉早17产量为7 925.54kg/hm^2;株距11.5 cm^2处理中,产量最高的为取秧面积1.83 cm^2处理,继续增加取秧面积产量下降,株两优819产量为8 492.94 kg/hm^2、中嘉早17产量为8 000.23 kg/hm^2。因此,早稻适宜机插规格,株距11.5 cm、取秧面积1.83cm^2,常规稻品种取秧面积亦可增至2.23 cm^2。

关 键 词：Double-season early rice TRANSPLANTER Plant spacing Finger sticking area YIELD 

分 类 号：S511.31[农业科学—作物学]