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Position: Home > Articles > Effects of two potassium fertilizers on growth and yield of sweet potato Soil and Fertilizer Sciences in China 2016 (2) 99-103

两种钾肥不同用量对商薯19生长和产量的影响

作  者:
周红梅;范建芝;井水华;王春兰;黄成星
单  位:
济宁市农业科学研究院
关键词:
商薯19;钾肥;施肥量;产量
摘  要:
以甘薯品种"商薯19"为试验材料,研究了两种钾肥(硫酸钾、氯化钾)不同用量对甘薯生长和产量的影响。结果表明,甘薯施用两种钾肥均能提高单株块根鲜重,对甘薯干物率无明显影响。施用钾肥有利于提高甘薯商品薯率,显著提高商品薯及鲜薯产量。试验条件下,硫酸钾和氯化钾均在施钾(K_2O)135 kg/hm~2时,商品薯和鲜薯产量达到最高,最高商品薯产量分别为31 690.8和30 363.4 kg/hm~2;最高鲜薯产量分别为33 439.7和32 740.4 kg/hm~2。在施钾量(K_2O)为90~135 kg/hm~2范围内,钾肥品种对产量无明显影响。
译  名:
Effects of two potassium fertilizers on growth and yield of sweet potato
作  者:
ZHOU Hong-mei;FAN Jian-zhi;JING Shui-hua;WANG Chun-lan;HUANG Cheng-xing;Jining Academy of Agricultural Sciences;
关键词:
Shangshu 19;;potassium fertilizer;;fertilizing amount;;yield
摘  要:
A field experiment was carried out to study the effects of different types and rates of potassium fertilizer on growth and yield of sweet potato,potassium sulfate and potassium chloride were selected as test materials. The results showed that the applying of potassium fertilizer improved fresh weight of root tube per plant,increased yield of sweet potatoes and improved marketable tuber percentage,but there was no significant difference for the rate of dry root. Under the conditions of this test,both potassium sulfate and potassium chloride treatments had the maximum commodity yield( 31 690. 8 and30 363. 4 kg/hm~2) and fresh yield( 33 439. 7 and 32 740. 4 kg/hm~2) when applying K_2 O 135 kg/hm~2. There was no obvious difference for the fresh yield between potassium sulfate treatment and potassium chloride treatment with K_2 O application of 90 ~ 135 kg/hm~2.

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