红壤旱地分带复种制的生态功能研究  

Study on ecological function of belt multi-cropping systems on upland in red earth:

作　　者：傅庆林[1] 罗永进[1] 

机构地区：[1]浙江省农业科学院土壤肥料研究所

出　　处：《浙江农业学报》1995年第5期405-407,共3页Acta Agriculturae Zhejiangensis

摘　　要：红壤旱地分带复种制Ⅰ（Ａ带小麦－甘薯、Ｂ带马铃薯／春玉米／绿豆）和Ⅱ（Ａ带小麦－甘薯、Ｂ带黑麦草／春玉米／绿豆）比对照Ⅲ（小麦－甘薯）增加产量４７％～６５％；能量产投比高０．３７～０．５９，劳动生产率提高２．５～５倍；分带复种制生态系统Ｎ、Ｐ、Ｋ均有盈余，对照Ⅲ的小麦－甘薯生态系统Ｐ、Ｋ表现亏缺，Ｎ有盈余。但是，分带复种制磷的利用率（Ｏ／Ｉ）较低，约２８％～４１％。In comparison with check (wheat-potato), belt multi-cropping systems Ⅰ (Belt A: wheat-sweet potato, Belt B: potato/maize/green bean) and Ⅱ (Belt A: wheat-potato, Belt B: rye grass/maize/green bean) have high yield and good ecological and economic benefits on upland in red earth. The yield of Ⅰ and Ⅱ raised 47%～65% and output/input ratio of energy of Ⅰand Ⅱ increased 0.37～0.59 in contrast with those of CK. And labour productivity of Ⅰ and Ⅱ increased 2.5～5 times as much as that of CK. All of balance values of N, P and K were surplus in the two belt multi-cropping systems (Ⅰ and Ⅱ). But utilization rate of P was low in Ⅰ and Ⅱ (about 28%～41%). The balance values of P and K were negtive in wheat-potato ecosystem, but the balance value of N showed surplus.

关 键 词：红壤 带状 复种制 旱地 生态功能 

分 类 号：S344.3[农业科学—作物栽培与耕作技术] S155.25[农业科学—农艺学]