河西绿洲灌区马铃薯间作绿肥高效种植模式研究

在河西绿洲生态条件下,研究了马铃薯与不同绿肥的间作模式。结果表明,马铃薯产量为根茬处理高于压青处理,以马铃薯间作针叶豌豆(根茬)的折合产量最高,为27515.15 kg/hm2,较单作马铃薯增产14.7%。马铃薯间作箭豌豆混播毛叶苕子,绿肥鲜草产量最高,根瘤数最多,且明显高于其它处理。马铃薯间作针叶豌豆无论是根茬还是压青处理,不同层次土壤的含水量变化相对其它处理稳定;马铃薯间作甜豌豆的土壤速效磷、速效钾、硝态氮、铵态氮含量根茬处理高于压青处理,间作箭豌豆混播毛叶苕子(根茬)和(压青)处理土壤速效钾、速效磷、硝态氮、铵态氮含量均低于单作马铃薯。

Stugy on High-efficient Planting Patters of Potato Intercropping Green Manure in Hexi Oasis Irrigation

The planting patters of potato intercropping green manure was studied under the ecological conditions in the HexiOases,the results showed that the stubble treatment of potato production is higher than the pressure green treatment,the yield of potatointercropping needles pea（stubble） was the highest which 27 515.15 kg/hm^2 and 14.7% higher than yield of potato monoculture.potato intercropping vetch mixed leaf vetch hair which the highest yield of green manure and fresh grass,the largest number of noduleswas significantly higher than other treatments.The soil moisture for different levels of potato intercropping green needles and pressurepea stubble was stability relative to other treatments;the soil phosphorus and potassium,nitrate nitrogen,ammonium nitrogen content ofpotato intercropping sweet pea higher than the pressure treatment.The soil available K,available P,nitrate nitrogen,ammoniumnitrogen of potato intercropping vetch mixed leaf vetch hair（stubble） and（green manuring） were lower than that monoculture potatoes.