克新4号马铃薯高产施肥技术的研究

在浙江省马铃薯主产区丽水市,通过2年试验研究了克新4号马铃薯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增施钾肥,提高了马铃薯产量、块茎淀粉含量、干物质含量和商品率,提高了叶面积系数、叶绿素含量和净同化率。同时试验表明,增施钾肥的不同处理效果不同。根据增产提质效果及实际效益,推荐施肥量为:N 120 kg/hm2、P2O580 kg/hm2、K2O 180 kg/hm2、农家肥104kg/hm2。

Research on fertilization techniques of high production of "Kexin No.4 potato"

After two years' experiments in Lishui,the main potato producing area of Zhejiang,the effects of fertilization measures for high production of Kexin No.4 potato on its production and related traits were examined.The results of the tests indicated that the potato production,the starch content and the commodity rate could be improved as well as leaf area index,chlorophyll content;net assimilation rate and solids content could be increased by increasing the amount of nitrogenous increasing the phosphate fertilizer and potassium fertilizer on the basis of the usual fertilization in local area.In the meanwhile,the result of the tests showed that different disposal methods of phosphate and potassium fertilizer lead to different production effects.According to the effect of increasing production,enhancing quality and net benefit,we recommened the dosage: N-120 kg/hm2,P2O5-80 kg/hm2,K2O-180 kg/hm2,farmyard manure 10000 kg/hm2.