种植密度对马铃薯新品种“华恩1号”薯块空心的影响

Effects of Different Planting Density on Potato Piece Hollow Ratio of a New Potato Cultivar “Huaen No.1”

[目的]筛选出产量高、薯块空心率较低的“华恩1号”种植密度。为其犬面积推广和充分发挥其优势提供技术参考。[方法]采用单因素随机区组设计，6个种植密度分别为4．50万、5．25万、6．00方、6．75万、7．50万、8．257f：~／hm。。[结果]适当增加种植密度，有利于薯块空心率的降低。当种植密度为6．75万株／hm2。时，薯块空心率为5．5％，产量为42895。5kg／hm。，居第2位；当种植密度为7．50万株／hm2 时，薯块空心率为2．2％，产量为44737．5kg／hm。，居第1位。[结论]“华恿1号”种植密度控制在6．45万～7．20万株／hm2，能有效减少薯块空心率，同时能获得较高的产量。

[ Objective ] The aim was to screen out the planting density of“Huaen No, 1” getting high yield and low potato piece hollow ratio, and provide a technological reference for its promotion in a large scale and giving full play to its advantages. [ Method] The single factor ran- domized block design was used, and six planting densities were 4.50 x 104 , 5; 25 x 104 ,6.00 x 104 , 6.75 x 104 , 7.50 x 104 , 8.25 x 104 plants/hm2, resp.. [ Result] Increasing the planting densities appropriating was benefit for increasing of potato piece hollow ratio. When the planting density was 6.75 x 104 plants/bin2, the potato piece hollow ratio was 5.5%, and the yield was 42 895.5 kg/hm2 and belonged to the second ; When the planting density was 7.50 x 104 plants/hm2, the potato piece hollow ratio was 2, 2%, and the yield was 44 737.5 kg/hm2 and belonged to the first. [ Conclusion] When its planting density was 6.45 x 104 - 7.20x 104 p][ants/hm2, the potato piece hollow ratio of “Huaen No. 1”decreases effectively, and its yield is higher.