【摘要】 [目的]为坡耕地的整治提供理论指导。[方法]以天池3号玉米为材料,研究了护坡拦蓄保水区和自然降水区(对照)不同种植模式和肥力配比对玉米产量性状的影响。[结果]在不施肥条件下,护坡拦蓄保水区玉米单作、玉米+马铃薯间作,玉米千粒重平均为328.13、06.8 g,对照区玉米千粒重为283.12、92.4 g;在施肥条件下,对玉米千粒重影响不大。不施肥、低肥、高肥、特高肥条件下,护坡拦蓄保水区的玉米单作产量比对照增加61.6%、24.3%、10.5%和9.3%;玉米+马铃薯间作的玉米产量比对照增加47.0%、15.0%、10.2%和8.7%。单作时N∶P=1∶1肥力配比的增产效果优于2∶1的肥力配比,间作时2∶1的氮磷配比略优于1∶1的氮磷配比。[结论]护坡拦蓄保水措施能提高玉米产量,增产效果随施肥水平而变化。更多还原

【Abstract】 [Objective] The study was to provide the theoretical guidance for the management of slope farmland.[Method] With maize variety Tianchi 3 as material,the effect of different planting pattern,fertilizer ratio in slope protection interception and water retention zone and natural precipitation zone(CK) on maize yield was studied.[Result] Under no fertilization condition,the maize 1 000-grain weight of maize monoculture,maize and potato intercropping in slope protection interception and water retention zone was 328.1,306.8 g and that of CK was 283.1,292.4 g.Under fertilization condition,maize 1 000-grain weight was influenced little.Under conditions of no fertilization and low,high and extremely high fertilization,the maize yields of maize monoculture in slope protection interception and water retention zone were increased by 61.6%,24.3%,10.5% and 9.3% than that of CK and that of maize and potato intercropping were increased by 47.0%,15.0%,10.2% and 8.7% than that of CK.The yield-increasing effect of the fertilizer ratio(N∶P=1∶1) was better than that of the fertilizer ratio(N∶P=2∶1) in monoculture and that of the fertilizer ratio(N∶P=2∶1) was slightly better than that of the fertilizer ratio(N∶P=1∶1) in intercropping.[Conclusion] Slope protection interception water retention technology could improve the maize yield and its increasing effect varied with fertilizer level.更多还原