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稀土为57—71号镧系元素镧、铯、钍、钕等硝酸盐为主的混合物,是无毒无污染的天然微肥,在我国具有丰富的贮量.用稀土溶液对蔬菜进行叶面喷肥,可提高光合效率,促进植株生育,提高产品产量和质量.我们在1988年进行的试验表明,在蔬菜上喷施稀土溶液,其浓度以800倍为宜,喷施量以叶面均匀湿润见滴而未滴为准.直播的蔬菜应在幼苗生长盛期开始喷布;需要移植的蔬菜,应在定植缓苗后开始喷布.一般每隔1周喷1次,共喷3次.在配制稀土溶液时,水的pH
Rare earth 57-71 lanthanide elements such as lanthanum, cesium, thorium, neodymium and other nitrate-based mixture is a non-toxic non-polluting natural trace fertilizers, rich in reserves in China with rare earth solution on the leaves of vegetables Fertilization can improve photosynthetic efficiency and promote plant growth and improve product yield and quality of our tests carried out in 1988 showed that spraying rare earth solution on vegetables, the concentration of 800 times is appropriate, the amount of spray to foliar uniform See the drops of moisture without dripping prevail. Live vegetables should be sprouted in the seedling growth period; need to transplant vegetables, should be in the colonization Huanmiao began to spray .Is generally spray every 1 week, a total of 3 times spray The pH of the water when formulating the rare earth solution