| 赵全仁,陈秉焱,毕江涛,梁朴,王晓霞,李若泰.宁南山区旱地平衡施肥专题试验初报[J].干旱地区农业研究,2005,(3):75~79 |
| 宁南山区旱地平衡施肥专题试验初报 |
| Balanced fertilization on dry land in the mountainous area of south Ningxia |
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| DOI：10.7606/j.issn.1000-7601.2005.03.16 |
| 中文关键词: 平衡施肥 最优施肥组合 旱地 宁南山区 |
| 英文关键词:dry land balanced fertilization optimum fertilization combination |
| 基金项目:宁夏自治区科技攻关课题“宁南山区科技扶贫酸刺示范区的建立”(2002-011-01) |
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| 中文摘要: |
| 2001～2003年连续3a在西吉县吉强镇酸刺村科技扶贫示范区旱地上,采用三因素四水平14处理最优回归设计,对西吉县4种主栽农作物小麦、豌豆、地膜玉米、马铃薯进行了平衡施肥专题试验研究。结果表明在降雨量350～400mm的半干旱地区,上述4种农作物的最优施肥组合分别为施纯N120kg/hm2、P2>O590kg/hm2、K2O30kg/hm2;N45kg/hm2、P2>O5180kg/hm2、K2O40kg/hm2;N270kg/hm2、P2>O5120kg/hm2、K2O60kg/hm2;N225kg/hm2、P2>O572kg/hm2、K2O80kg/hm2。 |
| 英文摘要: |
| By using the optimum regression design of three factors and four levels, the experiment of balanced fertilization was carried out on the dry land in Xiji county of south Ningxia for the main crops during 20012003. The results showed that, in the semi-arid areas with 350400 mm precipitation, the optimum fertilization combination for wheat was N 120 kg/hm2, P2>O5 90 kg/hm2, K2O 30 kg/hm2; for pea was N45 kg/hm2, P2>O5 180 kg/hm2, K2O 40 kg/hm2; for film-mulched corn was N270 kg/hm2, P2>O5 120 kg/hm2, K2O 60 kg/hm2; for potato was N225 kg/hm2, P2>O5 72 kg/hm2, K2O 80 kg/hm2. |
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