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之所以称为微肥,就是因为其需求量小、用量少,但缺了还不行。然而,不少菜农对微肥的用量不是很了解,有的菜农甚至像施用复合肥一样,不但造成了严重浪费,还对蔬菜产生了毒害。下面介绍几种主要微肥的使用剂量:1.硼肥。主要有硼砂、硼酸,其次还有硼镁肥等。硼砂、硼酸为常用硼肥,每667m~2土壤底施或追施0.50~0.75kg,叶面喷施浓度0.1%~0.3%,浸种浓度0.01%~0.10%,拌种为每公斤种子用肥0.2~0.5g。2.锌肥。主要有硫酸锌,另外还有氧化锌、氮化锌、螯合态锌等。硫酸锌为常用锌肥,土壤底施或每
The reason is called fertilizer, it is because of its small demand, less dosage, but the lack of not enough. However, many vegetable farmers do not know much about the amount of micronutrients. Some vegetable farmers, like compound fertilizers, not only cause serious waste but also poison the vegetables. The following describes the use of several major micronutrients dose: 1. Boron. Mainly borax, boric acid, followed by boron magnesium fertilizer and so on. Borax, boric acid is commonly used boron fertilizer, bottom soil or topdressing 0.50 ~ 0.75kg per 667m ~ 2 soil, foliar spraying concentration of 0.1% ~ 0.3%, soaking concentration of 0.01% ~ 0.10%, dressing per kilogram of seed fertilizer 0.2 ~ 0.5g. 2 zinc fertilizer Mainly zinc sulfate, in addition to zinc oxide, zinc nitride, chelated zinc. Zinc sulfate is commonly used zinc fertilizer, soil or facilities