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伊朗的Kelachi和Lahijan两个地方春季和夏季总降水量分别为350mm和750mm,在这两地研究了不同氮素肥料对茶叶产量的作用,并研究在施氮磷钾肥料时,灌溉对产量的影响。增施氮肥在90公斤/公顷以下,增产是直线上升的。氮肥增施到180公斤/公顷,产量有些缩减,但在两地灌溉的茶园里,既使氮肥增加到180公斤/公顷,增产还是显著的。施用氮肥超过180公斤/公顷,只有土层深厚,茶树高大的灌溉茶园里,才能观察到显著的增产。肥料结合灌溉试验,采用裂区设计法,灌溉处理为主区,施肥为副区。灌溉用0和
The total spring and summer rainfall in Kelachi and Lahijan of Iran were 350mm and 750mm, respectively. The effects of different nitrogen fertilizers on the tea yield were studied in both areas. The effects of irrigation on yield influences. Increasing nitrogen fertilizer below 90 kg / ha will increase production straight up. Nitrogen fertilizer increased to 180 kg / ha, yield some reduction, but in the two irrigated tea garden, even if the nitrogen fertilizer increased to 180 kg / ha, increase production is still significant. Nitrogen fertilizer application of more than 180 kg / ha, only deep soil, tall tea plantations in the tea tree in order to observe a significant increase. Fertilizer combined with irrigation experiments, the use of split design method, the main irrigation area, fertilization as a sub-district. Irrigation with 0 and