Effect of Two Organic Fertilizers of Cattle Manure on Growth Rate of Sweet Sorghum

doi:10.11924/j.issn.1000-6850.casb2020-0361

Abstract

Abstract:

The study aims to investigate the effect of cattle manure biogas slurry and compost on the growth of forage sweet sorghum (Sorghum bicolor), and determine the suitable fertilizer for planting sweet sorghum. The growth rate of plant height, stem diameter and leaf width of sweet sorghum which was treated with cattle manure biogas slurry and compost were observed and analyzed. The results showed that the height growth rate of sweet sorghum treated with cattle manure compost and biogas slurry was 1.12 and 1.02 times that of no fertilizer treatment. The average growth rate of sweet sorghum with treatment of cattle manure compost was 1.09 times that of biogas slurry. The height growth of sweet sorghum with treatment of biogas slurry was higher than that with cattle manure compost in two periods, but the total height growth of sweet sorghum with cattle manure compost was larger. The stem diameter growth rate of sweet sorghum with treatment of biogas slurry was 2.8 times that of no fertilizer treatment and 1.87 times that of cattle manure compost. The average leaf width growth rate with treatment of cattle manure compost was 1.09 times that of biogas slurry, and the growth duration was longer. The amount of humic acid and total nitrogen in cattle manure compost is large, which could increase plant height and leaf growth rate of sweet sorghum, so it is suitable to be used as base fertilizer. Biogas slurry has a large amount of available potassium, nitrate nitrogen and ammonium nitrogen, which can increase the stem diameter growth rate of sweet sorghum and promote the growth in a short time, and be used as base fertilizer or topdressing fertilizer.

Key words: sweet sorghum, cattle manure, biogas slurry, plant height, stem diameter, leaf width,growth rate

CLC Number:

S156.2
S514

Liu Shujuan, Liu Hujun, Liu Guangwu, Li Yinke, Wan Xiang, Zhang Zhiping, Liu Kailin, Li Jingjing. Effect of Two Organic Fertilizers of Cattle Manure on Growth Rate of Sweet Sorghum[J]. Chinese Agricultural Science Bulletin, 2021, 37(19): 22-26.

Figures/Tables 4

References 30

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肥料种类	腐殖酸/(g/kg)	富里酸/(g/kg)	全氮/(g/kg)	速效钾/(g/kg)	速效磷/(g/kg)	硝态氮/(mg/kg)	铵态氮/(mg/kg)	pH	电导率/(ms/cm)
牛粪堆肥	34.47	18.30	18.43	17.04	33.87	0.95	0.12	8.21	2.15
牛粪沼液	0.71	0.21	0.70	317.39	8.18	11.03	117.23	7.86	1.61

肥料种类	腐殖酸/(g/kg)	富里酸/(g/kg)	全氮/(g/kg)	速效钾/(g/kg)	速效磷/(g/kg)	硝态氮/(mg/kg)	铵态氮/(mg/kg)	pH	电导率/(ms/cm)
牛粪堆肥	34.47	18.30	18.43	17.04	33.87	0.95	0.12	8.21	2.15
牛粪沼液	0.71	0.21	0.70	317.39	8.18	11.03	117.23	7.86	1.61