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《Shandong Agricultural Sciences》 2014-06
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Effects of Slow-Released Fertilizer on Morphological Indexes,Yield and Economic Benefit of Yam Tubers

Xu Nianfang;Lan Chengyun;Jiao Jian;Shu Rui;Fu Zaiqiu;Liu Shaojun;Shandong Agricultural and Sideline Raw Materials Research Institute on Light Industry;  
The effects of slow-released fertilizer on morphological indexes,yield and economic benefit of yam tubers were studied using Japanese yam as test material. With the treatment without fertilizer as control,two treatments were set as slow-released fertilizer and fast-released fertilizer with the same nutrient content. The results showed that there were significant differences between fast-released fertilizer and slow-released fertilizer in morphological indexes and yield of yam tubers. The slow-released fertilizer treatment could significantly increase the tuber length,tuber diameter,rate of marketable tuber and yield; the effect was the best when using 200 kg of slow-released fertilizer per 666. 7m2; the yield increased by 44. 95% and25. 80% compared with the control and fast-release fertilizer; the net income was 16 604. 81yuan per 666. 7m2,which was 87. 82% higher than that of control and 57. 39% higher than that of fast-released fertilizer.
【CateGory Index】: S632.1;F326.12
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