植物正常地生长和发育必须要有微量元素,这一点已被科学和实践所证实。微量元素不仅影响植物的光合作用和同化作用,并且是开花结实的调节剂。根据我们的材料,在苗圃中应用微量元素最有效的方法是播种前用微量元素处理种子(作者用松树和云杉种子做了试验)。渗入种子的少量微量元素能加 The normal growth and development of plants must have trace elements, which has been confirmed by science and practice. Trace elements not only affect photosynthesis and assimilation of plants, but also flowering regulators. According to our sources, the most effective way to use trace elements in nurseries is to treat the seeds with trace elements before sowing (the authors tested with pine and spruce seeds). A small amount of trace elements infiltrated into the seed can be added