西瓜应用稀土增产效果好西瓜应用稀土增产技术是近年来我场试验推广的一项西瓜增产增收的重要措施。施用方法；分西瓜４—６片真叶和座果前两次叶面喷洒，每亩用稀土３５—４５克，并加入甲基托布津２０克（防霜霉病、灰斑病），兑水４０公斤，溶解后均匀喷洒在每株西瓜上... Application of rare earths yield watermelon good effect of watermelon Rare earths increase production technology in recent years, my experiment to promote a watermelon production and income an important measure. Application method; watermelon 4-6 pieces of true leaves and fruit foliage spraying the first two leaves, 35-45 grams per mu with rare earth, and add 20 grams of thiophanate-methyl (anti-down mildew, gray spot disease), against Water 40 kg, dissolved evenly sprayed on each watermelon ...