缓释控肥对芋头农艺性状、产量和经济效益的影响

doi:10.12190/j.issn.2096-1197.2020.02.07

Abstract

Abstract: 【Objective】To explore the application effect of slow-release controlled fertilizer reduction on taro [Colocasia esculenta (L.) Schoot].【Methods】Jingjiang Xiangsha taro was used as the test material. Two fertilizers, 45% quick-acting compound fertilizer (F1) and 47% slow-release controlled fertilizer (F2), including 315 kg/hm² (Y1), 360 kg/hm²(Y2), 405 kg/hm² (Y3) and 450 kg/hm² (Y4), were set to study their effects on main agronomic traits, yield and economic benefits of taro.【Results】The average plant height, stem diameter, leaf length and leaf width increased with the increase of fertilizer amount on June 13 and July 13, but there was no significant difference on August 13 and September 13 (P<0.05).Among them, the main agronomic traits of F1 in each treatment were higher than F2 corresponding to each treatment on June 13, and lower than F2 on July 13, no significant effect on the chlorophyll content (SPAD) of taro leaves by the two fertilizers. The yield variations of seed taro with 45% quick-acting compound fertilizer and 47% slow release controlled fertilizer were 13 735.20 -14 245.80 kg/hm² and 13 927.35-14 843.70 kg/hm², respectively. The correlation coefficients of the amount and seed taro yield were 0.228 and 0.352, respectively, which did not reach the significant level. The economic benefit of each treatment of slow release controlled fertilizer was higher than that of each treatment of 45% quick effect compound fertilizer.【Conclusion】Compared with quick-acting compound fertilizer, slow-release controlled fertilizer had the advantages of long duration of fertilizer effect, high yield and economic benefit and recommend slow-release controlled fertilizer 315 kg/hm² at least.

Key words: Colocasia esculenta (L.) Schoot, Slow-release controlled fertilizer, Agronomic character, Yield, Economic benefit

CLC Number:

S143.5

WANG An, CHANG Qingtao, SUN Jingjing, WU Wei. Effects of slow-release controlled fertilizer on agronomic characters, yield and economic benefits in Colocasia esculenta (L.) Schoot[J].Journal of Northern Agriculture, 2020, 48(2): 43-50.

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Effects of slow-release controlled fertilizer on agronomic characters, yield and economic benefits in Colocasia esculenta (L.) Schoot

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