硝酸钾在西瓜上的应用效果

Effects of Potassium Nitrate Application to Water Melon

土施不同量的KNO3，喷施不同浓度的KNO3以及在西瓜不同生育期喷施1％KNO3。结果表明：对改变西瓜生育期无影响，能明显促进西瓜的营养生长和提高座果率，并能改善西瓜品质。KNO3土施用量以5kg／667m2为佳，叶面喷施浓度以1％～1．5％为好。

Various weight Potassium Nitrate to soil for water melon growth,spraied various concentrations KNO3 and spraied 1%' KNO3in different growth period on water melon plant were tested. Growing time not affected, vegtative growth pro moted, percentage of fertile fruit raised and qualities improved were found. In edditon, the better potassium Nitrate amount required to soil is 5 kg/667 m2, and the better Potassium Nitrate concentration range spraying on plant is 1 %～1. 5 %.