| 张 昳，常庆瑞，赵业婷，孙梨萍.府谷县耕地糜子种植适宜性研究[J].干旱地区农业研究,2015,33(1):187~193 |
| 府谷县耕地糜子种植适宜性研究 |
| Suitability analysis of farmland for corn millet growing in Fugu County |
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| DOI：10.16302/j.cnki.1000-7601.2015.01.031 |
| 中文关键词: 糜子 土壤养分 耕地 适宜性评价 |
| 英文关键词:corn millet soil nutrient cultivated land suitability evaluation |
| 基金项目:国家”863“高新技术研究与发展计划项目（2013AA102401）；国家科技支撑计划项目（2012BAH29B04-00） |
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| 中文摘要: |
| 为了更合理地开发和利用当地有限的耕地资源，维护和提高耕地生产力,采用府谷县2011年“测土配方施肥”项目数据，基于GIS技术平台，综合利用地统计学、特尔斐法、综合评价法等方法，结合“3414”田间肥效试验结果，建立府谷县糜子种植适宜性评价体系。结果表明：对糜子种植而言，府谷县土壤有机质含量偏低（＜10 g·kg-1），碱解氮含量中等（25～40 mg·kg-1），有效磷含量偏低（5～10 mg·kg-1），速效钾含量中等（70～100 mg·kg-1）。研究区耕地糜子种植适宜性水平分异大，高度适宜的耕地面积占总耕地面积的11.20%，适宜占28.99%，二者多沿河流阶地分布；勉强适宜占54.62%，遍布黄土丘陵区；不适宜占5.19%，呈点缀状分布于中部黄土丘陵区。增施碱解氮和有效磷，提高土壤有机质含量，保持土壤速效钾含量，同时注意改善土壤结构，提高土壤抗旱保肥和供肥能力，进一步提高糜子种植适宜性水平。 |
| 英文摘要: |
| In order to develop and utilize the scarce land resources more rationally, while maintain and improve the productivity of cultivated land, this paper uses Fugu County data from “Measured Soil Fertilizer” project in 2011 and the “3414” field fertilizer experiment, in combination with GIS technology platform and comprehensive utilization of geostatistics, Delphi method, comprehensive evaluation method, to evaluate the suitability of corn cultivation in Fugu County. For millet planting, soils of Fugu County contains low level of total organic matter (＜10 g·kg-1) and available phosphorus (5～10 mg·kg-1), medium level of alkali-hydrolysable nitrogen (25～40 mg·kg-1) and available K(70～100 mg·kg-1). The suitability of corn growing varies with location, with river terrace being highly suitable (accounting for 11.20% of the total arable land area) or suitable (28.99%) whereas hill areas being marginally suitable (54.62%) and not suitable (5.19%). It should be reasonably increase the content of alkali-hydrolysable nitrogen, available phosphorus and soil organic matter, maintain the content of soil available potassium. Meanwhile, attention should be paid to improve soil texture, increase the ability of soil drought resistance, and fertilizer conservation, thus enhancing the suitability of corn millet. |
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