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《Journal of Henan Agricultural Sciences》 2018-07
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Effects of Planting Density on Peanut Yield and Analysis of Density Tolerance

DONG Wenzhao;ZHANG Jun;HAN Suoyi;ZHANG Zhongxin;WU Jihua;SONG Jiangchun;LIU Juan;Industrial Crops Research Institute,Henan Academy of Agricultural Sciences;Key Laboratory of Oil Crops in Huanghuaihai Plains,Ministry of Agriculture;Henan Provincial Key Laboratory for Oil Crops Improvement;Shangqiu Academy of Agriculture and Forestry Sciences;Nanyang Academy of Agricultural Sciences;  
To study the effect of planting density on the yield of peanut and to clarify the density tolerance of different peanut varieties,Yuanza 9102,Yuanza 6,Yuhua 23,DF12,Shanghua 4 and Shanghua 6 were used as materials. The planting densities were from 1. 125 ×10~5 to 3. 600 ×10~5 holes/ha according to different treatment. A seed per hole,double seeds per hole,and different density tolerance were studied in this experiment. The results showed that high planting density for all kinds of peanut varieties had obvious effect on yield increase. Shanghua 4,Shanghua 6,Yuanza 9102 and Yuhua 23 reached the highest yield when the planting density was 2. 250 ×10~5 holes/ha,while Yuanza 6 and DF12 reached the highest yield when the planting density was 2. 700 ×10~5 holes/ha when double seeds per hole. At a density of 1. 800 ×105 holes/ha or less,the yield of 6 varieties planted in double seeds per hole were higher than that ofsingle seed per hole. The yield of all the other varieties planted in single seed per hole was higher than that of double seeds per hole when the planting density was 2. 700 ×10~5 holes/ha except for Yuhua 23. In the case of a certain density,the yield difference between single seed per hole and double seeds per hole was not significant. Large seed variety Shanghua 6 reached highest yield when planted single seed per hole with equal line spacing at the density of 2. 250 ×10~5 holes/ha,while the small seed variety Yuanza 9102 reached highest yield when planted single seed per hole with unequal line spacing at the density of 2. 700 ×10~5 holes/ha. In the case of high density planting,pods of per plant decreased,full pod rate and kernel rate increased significantly,commodity quality became better and plant height increased.
【Fund】: 河南省现代农业产业技术体系项目(S2012-5);; 河南省重大科技专项(161100111000);; 国家花生产业技术体系项目(CARS-13);; 河南省基础与前沿项目(092300410077)
【CateGory Index】: S565.2
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