毕节地区中低产旱耕地地力状况与改良治理途径  

The Situation of Soil Fertility of Dry Lands with Middle and Lower Yield and Its Improvement Measures in Bijie Prefecture

作　　者：谢定敏 郑元红 潘国元 胡西会 肖莉 王慧 

机构地区：[1]贵州省毕节地区农业局,贵州毕节551700 [2]贵州省毕节地区经作站,贵州毕节551700 [3]贵州省毕节农校,贵州毕节551700

出　　处：《贵州农业科学》2009年第1期73-76,共4页Guizhou Agricultural Sciences

基　　金：贵州省重大攻关后补项目"贵州省中低产旱地粮食平衡丰产增效科技工程"[黔科合NZ字(2005)3011]

摘　　要：毕节地区中低产旱耕地有28.48万hm2,占整个旱耕地面积的94.50%以上,其中,中产旱耕地11.81万hm2,低产旱耕地16.67万hm2。土体较薄,剖面多为A-B或A-C构型,土壤酸化、粘化、黄化现象明显。潜在养分含量丰富,速效养分含量少,土中既大量缺氮、又严重缺磷,少数土壤缺钾,共有粘土型、沙土型、砾石型、障碍层次类型、冷烂型、矿毒型等6个类型,77个土种。主要改良治理措施是,大搞坡改梯等农田基本建设,采取增施有机肥、增施磷肥、合理轮作、客土改良、开挖排水沟等改良培肥措施。There is 0. 2848 million hm^2 of dry lands with middle and lower yield in Bijie prefecture, which occupies above 94.50% of total dry lands and the area of the dry lands with middle yield and lower yield is 0. 1181 million hm^2 and 0. 1667 million hm^2 respectively. The profile of the dry lands with a thin soil layer is A-B or A-C construction. The soil with serious acidification, claying and yellowing is rich in potential nutrient content but it is short of its active nutrients. There are 77 soil kinds, 6 soil types. The main improvement measures include building terrace lands, applying organic manure and P fertilizer, proper rotation of crops, improvement by increasing other fertile soil and digging water drainages.

关 键 词：中低产旱耕地 改良治理 地力状况 毕节地区 

分 类 号：S156.92[农业科学—土壤学]