马铃薯高产施肥效果的研究

研究“了尤金”马铃薯高产施肥措施对产量及相关性状的影响,试验表明:在当地习惯施肥基础上,提高氮肥量至120kg/hm2同时增施磷钾肥,提高了马铃薯产量、淀粉含量和商品率,提高了叶面积系数和净同化率。增施磷钾肥的不同处理效果不同,磷钾肥配合增施效果明显,其中以N120kg/hm2、P2O580kg/hm2、K2O170kg/hm2、农家肥10000 kg/hm2的施用量效果最佳。

Effects of Fertilization on the High Production of Potato

After two years' experiments in Lishui,the main potato producing area of Zhejiang,the effects of fertilization measures of high production of "Youjin Potato" were examined.The experimental result indicated the potato production,the starch content and the commodity rate can be improved as well as leaf area index;the net assimilation rate and solids content can be increased by increasing the amount of nitrogenous fertilizer to 120 kg/hm2 and increasing the phosphate fertilizer and potassium fertilizer on the basis of the usual fertilization in local area.Meanwhile,the different disposal methods of phosphate and potassium fertilizer resulted in the different production level.The effect of increasing of both phosphate fertilizer and potassium fertilizer was more obvious than one single fertilizer and we can receive the best effects by a proportioning of N 120 kg/hm2,P2O5 80 kg/hm2,K2O 170 kg/hm2.