Effect of nutrient on seed-melon

Soil nutrients system evaluation method was adopted to study soil nutrients effect on economic characters,yield and income of seed-melon,the distribution ratio of nutrients to yield were analysed also.Result show that every nutrients don't affect lengthwise and sidewise diameter,N,P,K,and Fe may distinctly improve economic characters,which include single melon weight,melon seeds weight per melon,melon seeds output ratio,one hundred grain weight of melon seeds and kernels output ratio,and Cu,Mn,and Zn decrease some of economic characters,which include melon seeds weight per melon,melon seeds output ratio,and kernels output ratio;every nutrients distinctively increase yield and income of seed-melon,N still is key factor to limit seed-melon yield,next are Zn and P,the order of nutrients limit to yield is NZnPFeMnCuK;and the contribution of every nutrients to yield and income of seed-melon are different,N still is main limited factor,trace elements are being limited factors obviously.