会-2在不同海拔地区高产高效栽培技术研究

在高、中、低海拔地区研究不同种植密度及施肥配比方式对会-2产量及效益的影响。试验结果表明,密度和施肥对马铃薯产量的影响极显著,但在中、高海拔条件下,二者的交互效应不显著,在低海拔条件下,二者的交互效应极显著;采用密度5000株/667m2,施肥配比N∶P2O5∶K2O=1∶0.5∶2(N 15 kg/667m2)处理(A3B3)更有利于会-2高产的获得,其次是密度4000株/667m2,施肥配比N∶P2O5∶K2O=1∶0.5∶2(N 15 kg/667m2)(A2B3)。在中、高海拔地区,处理A3B3的经济效益最高;在低海拔地区,处理A2B3的经济效益最高。

Study on High Yield and High Efficiency Cultivation Techniques of Hui-2 in Different Elevation Areas

Hui-2 was tested in different elevation areas to investigate effects of different plant density and application combination on its yield and economical benefit.The results showed that the plant density and application combination significantly affect the potato yield,the interactive effect between two factors was not obvious in the high and middle elevation areas,but it was very obvious in the low elevation area.The first and second seed yield were gained under the cultivation technique with 5000 plants/667m2of plant density and applying 15 kg/667m2 of N,7.5 kg/667m2 of P2O5 and 30 kg/667m2 of K2O,and with 4000 plants/667m2 of plant density and 15 kg/667m2 of N,7.5 kg/667m2 of P2O5 and 30 kg/667m2 of K2O separately.The economical benefit of the treatment with 5000 plants/667m2 of plant density and applying 15 kg/667m2 of N,7.5 kg/667m2 of P2O5 and 30 kg/667m2 of K2O was the highest in the high elevation area,and the economical benefit of the treatment with 4000 plants/667m2 of plant density and applying 15 kg/667m2 of N,7.5 kg/667m2 of P2O5 and 30 kg/667m2 of K2O was the highest in the low elevation area.