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Chinese Agricultural Science Bulletin ›› 2016, Vol. 32 ›› Issue (20): 147-154.doi: 10.11924/j.issn.1000-6850.casb16040087

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Design and Experiment of Hole-digging Mechanism in Fertilizer Deep-applicator for Orchards

Wang Quan1,2,3, Sun Songlin1,2,3, Qiu Jin1,4   

  1. (1College of Engineering, Hunan Agricultural University, Changsha 410128; 2Hunan Provincial Engineering Technology Research Center for Modern Agricultural Equipment, Changsha 410128; 3Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, Changsha 410128; 4Yiyang Senior Technical School, Yiyang Hunan 413000)
  • Received:2016-04-14 Revised:2016-05-13 Accepted:2016-05-25 Online:2016-07-15 Published:2016-07-15

Abstract: Fertilizer machinery cannot easily pass through a close planting orchard, and the fertilizer utilization rate is low when using surface fertilizing. To solve this problem, quantitatively deep-fertilization method through placing granular fertilizer into dug holes was proposed. To put the method into practice, a small size fertilizer deep-applicator for orchards was designed, and its hole-digging performance was tested as well. The results showed that when the holes’ depth were 300, 350 and 400 mm respectively, the average diameter of the top of the holes were 207.7, 207.1 and 209.9 mm, the average diameter of the bottom of the holes were 206.3, 204.3 and 206.1 mm, and the average depth of the holes were 296.7, 345.9 and 395.4 mm, respectively. The errors of the holes’ diameter and depth were within 5 mm. And the digging efficiency was 34.5, 39.6 and 44.1 s, respectively, which could meet the requirements of hole-digging. The testing data provide a technical reference for the industrialization of fertilizer deep-applicator for orchards.

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