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Position: Home > Articles > Research on soil nutrient abundance-deficiency index of maize in the semi-arid region of Northwest China Soil and Fertilizer Sciences in China 2014 (5) 5-10

西北半干旱地区玉米土壤养分丰缺指标研究

作  者：
任亮;任稳江
单  位：
甘肃省会宁县农业技术推广中心
关键词：
半干旱地区;全膜双垄沟播玉米;养分丰缺指标;施肥方案
摘  要：
对会宁县全膜双垄沟播玉米2007~2010年开展的"3414"田间肥效试验结果进行统计分析,研究了土壤有效养分含量与玉米相对产量之间的相关性,初步建立半干旱地区全膜双垄沟播玉米的土壤养分丰缺指标。结果表明,会宁县土壤碱解氮含量分3个等级,分别为低(<43mg·kg~(-1))、较低(43~73mg·kg~(-1))和中(73~125mg·kg~(-1));土壤有效磷含量分5个等级,分别为低(<7mg·kg~(-1))、较低(7~15mg·kg~(-1))、中(15~28mg·kg~(-1))、较高(28~35mg·kg~(-1))和高(>35mg·kg~(-1));土壤速效钾含量分4个等级,分别为较低(119~172mg·kg~(-1))、中(172~250mg·kg~(-1))、较高(250~283mg·kg~(-1))、高(>283mg·kg~(-1))。利用肥料效应函数,结合目标产量计算出不同肥力水平区间的推荐施肥量,每公顷半干旱区全膜双垄沟播玉米随地力等级从低到高以施N 266.1~185.1kg、P_2O_5132.2~95.1kg、K_2O 70~47.7kg,氮:磷:钾=1:0.62~0.43:0.38~0.25为宜。
译  名：
Research on soil nutrient abundance-deficiency index of maize in the semi-arid region of Northwest China
作  者：
REN liang;REN Wen-jiang;Agriculture Technology Popularizing Center;
关键词：
semi-arid areas;;all-film souble-furrow sowing maize;;nutrient plentiful-lack index;;balanced fertilization program
摘  要：
The "3414" fertilizer experiments carried out in Huining County between 2007 and 2010were conducted to study the relationship between soil nutrient availability and the relative yield of all-film doable-furrow sowed maize.The research preliminarily established the nutrient plentiful-lack index for the aforementioned semi-arid land.The results showed that the available hydrolyzed nitrogen content of the soil in Huining County was divided into three levels:low(< 43mg·kg~(-1)),medium-low(43~73mg·kg~(-1)) and medium(73~125mg·kg~(-1));the phosphorus content was divided into five levels:low(<7mg·kg~(-1)),medium-low(7~15mg·kg~(-1)),medium(15~28mg·kg~(-1)),medium-high(28~35mg·kg~(-1)) and high(>35mg·kg~(-1));the potassium content was divided into four levels:medium-low(119~172mg·kg~(-1)),medium(172~250mg·kg~(-1)),medium-high(250~283mg·kg~(-1)) and high(> 283mg·kg~(-1)).We calculated the average amount of recommended fertilization using the fertilizer effect function and the different soil fertility levels.The results indicated that the recommended NPK fertilizer rates were N 266.1~185.1kg·hm~(-2),P_2O_5132.2~95.1kg·hm~(-2) and K_2O 70~47.7kg·hm~(-2),respectively,and the appropriate N:P_2O_5:K_2O ratio was 1:0.62~0.43:0.38~0.25.

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