丘陵红壤旱地春马铃薯高产栽培技术研究初报

研究了覆膜和垄作栽培以及施肥量和种植密度对春马铃薯产量的影响。结果表明 :覆膜栽培较裸地栽培增产 48.2 %～ 5 7.6 % ,每公顷纯收入增加 7734.90～ 781 3.35元 ;垄作栽培较平畦栽培增产 7.92 % ;三元复合肥施用量以每公顷 6 0 0kg为宜 ;种植密度以8.2 5～ 9.75万株 /hm2 为宜

Preliminary Study on High Yield Culture Technique of Spring Potato on Dry Land of Hilly Red Soil

The effects of plastic-sheet-covered cultivation,ridge culture,fertilization quantity and planting density on the yield of spring potato were studied. The results showed that plastic-sheet-covered cultivation could increase potato yield by 48.2%～57.6% and pure income by 7 734.90～7 813.35 yuan/hm\+2 as compared with open cultivation;ridge culture could increase potato yield by 7.92% as compared with normal culture;the proper quantity of applying three-component complex fertilizer was 600kg/hm\+2;the suitable planting density of potato was 82 500～97 500 plants/hm\+2.