1.要严格掌握用量 微量元素只需要很少量就可以满足作物需要,并且从缺乏到过量中毒的范围很窄,稍有过量就可能对作物产生严重危害,有时造成土壤污染。所以微肥不是多多益善,要掌握适宜用量和浓度。 2.要根据本地土壤养分条件合理施用微肥 原则上是缺啥补啥,均匀、适量、适时,确保安全有效。如河南 1. To strictly control the amount of trace elements required only a small amount to meet crop needs, and from lack of over-poisoning is very narrow range, a slight excess may cause serious damage to crops, and sometimes soil pollution. Therefore, not a lot of benefit of micronutrient, to master the appropriate dosage and concentration. 2. According to the local soil nutrient conditions, the rational application of micronutrients in principle, lack of what, what, even, appropriate, timely, to ensure safe and effective. Such as Henan