干旱区生态环境知识资源中心(Arid): 甘肃河西内陆灌区主要土类供钾能力及经济作物钾素最佳施用量的研究

Arid

	甘肃河西内陆灌区主要土类供钾能力及经济作物钾素最佳施用量的研究
其他题名	Potassium Supplying Capacities of the Main Soil Types and Optimum Application Rates of Potassium of Economic Crops in Hexi Inland Irrigation Areas of Gansu Province
	张春梅 1; 闫治斌 2; 秦嘉海 1; 王爱勤 3; 肖占文 1
来源期刊	土壤通报
ISSN	0564-3945
出版年	2014
卷号	45 期号:2 页码:402-406
中文摘要	为了进一步探讨土类供钾能力与钾素施用量之间的关系,采用田间试验方法,研究了甘肃河西内陆灌区主要土类供钾能力和经济作物钾素最佳施用量。结果表明,施钾利润与土壤供钾能力呈负相关,供钾能力小的土壤,施钾利润大。不同土壤类型供钾能力由大到小的变化顺序是:耕种栗钙土>盐化潮土>耕种灰棕漠土>耕种灰漠土>灌漠土,而不同作物施钾利润由大到小的变化顺序是:西瓜>马铃薯>棉花>甜菜>油菜。经回归统计分析,西瓜、棉花、甜菜、油菜、马铃薯K_2O在462.00、298.95、355.51、113.36、239.70 kg hm~(-2)时的基础上,再继续增加钾肥施用量,施肥利润将出现报酬递减。
英文摘要	In the present paper, we studied the potassium supplying capacity of the main soil types and optimum application rates of potassium of economic crops by using field test in the Hexi inland irrigation of Gansu Province. The results showed that there were negative correlation between the potassium profits and the capacity of supplying potassium of the main soil types, i.e. the smaller the capacity of supplying potassium of the soil, the bigger potassium profits. The capacity of supplying potassium of the main soil types was arranged in a descendant order as the following: cultivated chestnut soil, salted alluvial soil, cultivated gray brown desert soil, cultivated gray desert soil and the irrigated desert soil. However, the potassium profits of the different crops were arranged in a descendant order as the following: watermelon, potato, cotton, sugar beet and rape. According to regression statistical analysis, the optimum application rates of potassium for economic benefits of watermelon, cotton, sugar beet, rape, potato were 462.00, 298.95, 355.51, 113.36 and 239.70 kg per hm~2, respectively. Over the above optimum application rates, the decreasing returns occurred.
中文关键词	河西内陆灌区 ; 供钾能力 ; 最佳施用量
英文关键词	Hexi inland irrigation Areas Capacity of supplying potassium Optimum application rate
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:5103359
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/231841
作者单位	1.河西学院农业与生物技术学院, 甘肃高校河西走廊特色资源利用省级重点实验室, 张掖, 甘肃 734000, 中国; 2.甘肃敦煌种业股份有限公司, 酒泉, 甘肃 735000, 中国; 3.中国科学院兰州化学物理研究所, 兰州, 甘肃 731000, 中国
推荐引用方式 GB/T 7714	张春梅,闫治斌,秦嘉海,等. 甘肃河西内陆灌区主要土类供钾能力及经济作物钾素最佳施用量的研究[J],2014,45(2):402-406.
APA	张春梅,闫治斌,秦嘉海,王爱勤,&肖占文.(2014).甘肃河西内陆灌区主要土类供钾能力及经济作物钾素最佳施用量的研究.土壤通报,45(2),402-406.
MLA	张春梅,et al."甘肃河西内陆灌区主要土类供钾能力及经济作物钾素最佳施用量的研究".土壤通报 45.2(2014):402-406.