盆栽果树年周期内生长量较大,着果期长,需要营养元素多,如果施入基肥不足,在生长期又未追肥,那么仅靠有限的盆土是不能维持其生长发育需求的,甚至还会因营养元素不足导致其缺素症的发生,因此,在实际工作中应采取必要措施予以矫治。缺氮症及矫治:缺氮,新生叶小,成熟叶片逐渐变黄,叶脉及叶柄呈红色,当年生新梢短小细弱且呈红褐色。矫治方法 Potted fruit trees grow more in the annual cycle, the fruit of a long period of time, the need for more nutrients, if applied to the lack of basal fertilizer, in the growing season and not topdressing, then only rely on limited Pentu is unable to maintain its growth and development needs, or even But also due to lack of nutrients lead to its occurrence of deficiency, therefore, in the actual work should take the necessary measures to be corrected. Nitrogen deficiency and correction: nitrogen deficiency, small newborn leaves, mature leaves gradually yellow, red veins and petiole, when the new shoots short thin and red-brown. Correction method