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前言锌是植物必需的营养元素。近年在世界许多稻作区的钙质土壤上,水稻出现了缺锌病症;我国的湖北、河北、山东、江苏等省,水稻也有缩苗、僵苗、红苗、甚至白叶的现象,施用锌肥有良好的增产效果,证明是缺锌引起的;我省部分地区水稻亦有缺锌现象。1978年,省稻作所在所内试验地上(草甸水稻土)用硫酸锌浸种,发现有促进秧苗生长的作用,在花期喷硫酸锌,产量有显著提高;1979年又用硫酸锌浸种,证明有提高产量的效果;同年林土所与省稻作所用盆钵试验研究水
Introduction Zinc is an essential nutrient for plants. In recent years, many paddy areas in the world of calcareous soil, rice appeared zinc deficiency disease; China’s Hubei, Hebei, Shandong, Jiangsu and other provinces, rice also reduced seedlings, stiff seedlings, red seedlings, and even the white leaf phenomenon, Zinc fertilizer has a good effect of increasing yield, proving that it is caused by zinc deficiency. In some areas of our province, rice also has zinc deficiency. In 1978, the experimental paddy in the province (meadow paddy soil) was soaked in zinc sulfate and found to promote the growth of seedlings. In the flowering period, the yield of zinc sulfate was significantly increased. Soaking seeds with zinc sulfate in 1979 proved that there was Improve the yield effect; the same year by the forest and the provincial basin used in pot experiment study of water