By using plot experiment, the paper studied nutritional effects of N P K fertilizers and the effect on seasonal changes in concentrations of N P K and their distribution patterns on sugarbeet.是什么意思_By using plot experiment, the paper studied nutritional effects of N P K fertilizers and the effect on seasonal changes in concentrations of N P K and their distribution patterns on sugarbeet.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句