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复合肥具有平衡供应养分的特点，是促进作物高产优质的有效途径，也是今后各种作物施肥发展的方向。针对茶树营养特点和四川茶区土壤肥力、气候等状况，研制适合四川地区茶树营养的专用复合肥，将对该地区菜园科学施肥，改变目前单施氮肥的现状具有重要意义。鉴此，笔者进行了?
Fertilizer has the characteristics of balanced supply of nutrients is to promote high yield and quality of crops an effective way, but also the future development of various types of crop fertilizer direction. According to the characteristics of tea tree nutrition and soil fertility, climate and other conditions in Sichuan tea area, the development of special compound fertilizer suitable for tea tree nutrition in Sichuan will be of great significance to the scientific fertilization of the vegetable garden in the area and to the change of the present status of single application of nitrogen fertilizer. In view of this, I conducted?