【摘要】 在大田栽培条件下,研究了不同的种植密度和施氮量对马铃薯的单株薯重、产量、块茎的淀粉含量和商品率的影响。结果表明:密度和施氮量分别为79500株/hm2、225 kg/hm2时,单株薯重、产量、商品薯率达到最大值;畸病薯率随施氮量不同没有规率性变化;种植密度大,块茎的淀粉含量反而减小。更多还原

【Abstract】 The text studied the effect of planting density and amount of nitrogen on tuber yield and starch contain and commodity potato rate.The results showed that: Tuber yield and commodity potato rate were both the largest when planting density and amount of nitrogen were 79,500stubs/ hm2,225kg/hm2.However the rate of malformations potatoes and unhealthy potatoes had no changes in the law.And with greater planting density,the starch content reduced.更多还原