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Chinese Agricultural Science Bulletin ›› 2017, Vol. 33 ›› Issue (32): 49-52.doi: 10.11924/j.issn.1000-6850.casb16100009

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Effect of Planting Density and Fertilizer Amount on Grain Yield of Job ’s Tears

  

  • Received:2016-10-05 Revised:2017-11-05 Accepted:2016-11-25 Online:2017-11-27 Published:2017-11-27

Abstract: To optimize the cultivation methods and increase yield of Job’s tears,‘Xinbaikeyiyi’was used as test material, field trails were conducted to investigate the effect of planting density (X 1) and fertilizer amount (X 2) on grain yield (Y ) by the orthogonal regression experimental design method. The results showed thatX 1,X 2 and yield (Y ) were fit the model of binary quadratic equation well; planting density of 150000-180000 plants/hm2 and fertilizer of 750.00-900.00 kg/hm2 could increase yield, and the best combination was 180000 plants/hm2 in density and 870.30 kg/hm2 in fertilizer amount. The increase of productive ear per unit area and kernels per spike were the main factors to increase yield. Therefore, in the condition of enough productive ear, increasing setting percentage to increase kernels per spike and grain weight per spike was an important way to increase yield.