钾肥对籽瓜产量与效益的影响

Effect of potash on yield and benefit of seed-melon

试验采用土壤养分状况系统研究法，根据土壤养分状况研究钾对籽瓜与瓜籽的经济性状、瓜籽产量及效益的影响。结果表明，施钾改善了籽瓜的单瓜重、单瓜瓜籽重、单瓜产籽数、产籽率、瓜籽百粒重、纵、横径及出仁率；施钾提高了籽瓜产量，与不施钾比较，施钾后，瓜籽产量增加157～230kg/hm^2，增产幅度9．2％～13．5％；施钾提高了籽瓜的产值与纯收入，与不施钾相比，施钾后，新增加产值942～1375元／hm^2，新增加纯收入818—1104元／hm^2，边际效益分析结果表明，籽瓜最高产量与最大利润的钾用量为135kg/hm^2。

Soil nutrients systematic evaluation method was adopted to study soil nutrients and effect of polassium on economic character of seed of melon and seed - melon, yield and benefit of seed- melon. Result showed that potassium could improve economic character of seed of melon and seed-melon, which includes single melon weight, melon seeds weight per melon, melon seeds output ratio, one hundred seed weight of melon seeds, kernels output ratio, and lengthwise and sidewise diameter of melon seeds; and that potassium could increase yield of seed-melon, yield of melon seeds with potash was increased by 157 ～230 kg/ hm^2, increase range was from 9.2% to 13.5% , compared to that without potash; and potassium also increases product value and net income of seed - melon, product value and net income of seed - melon with potash respectively increased by 942 ～1375 yuan/hm^2 and 818 ～ 1104 yuan/hm^2, compared to that without potash. Marginal benefit analysis showed that potash dosage that reaches the highest yieM and the maximum profit was 135 kg/hm^2.