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微量元素锌肥是作物生长必需的营养元素之一,主要存在于根细胞、叶绿体、新生组织内,参加光合作用、生长素形成及一系列植物酶的活动,对植株生长发育起着重要作用。或因土壤中有效锌含量低,不能满足作物生长的需要;或由于环境条件不适(如土壤pH值高),土壤中锌素形态改变成难以为植株吸收利用;或其它营养元素过多或不足(如磷、锰),阻碍锌素进入植株体内,而产生缺锌生理病害,其症状为:新叶失绿退色,老叶平摆错位,植株矮小,分蘖延迟,小花不孕率增加,因而降低作物产量。我省江汉平原湖区,地下水位高,低湿田多(地下水位50厘米以内),土壤有机质含量1.79—4.62%,土壤水浸pH值7.5—8.4,土
Trace element zinc fertilizer is one of the essential nutrients for crop growth. It is mainly found in root cells, chloroplasts and newborn tissues. It participates in photosynthesis, auxin formation and a series of activities of plant enzymes, and plays an important role in plant growth and development. Or due to the low effective zinc content in the soil, which can not meet the needs of crop growth; or because of the unfavorable environmental conditions (such as the high pH of the soil), the morphological changes of zinc in the soil are difficult to absorb and utilize by plants; or the excess or deficiencies of other nutrients (Such as phosphorus and manganese), hinder the zinc into the plant body, resulting in zinc deficiency physiological diseases, the symptoms are: green leaf fade green, the old leaf planted dislocation, plant dwarf, tillering delay, floret infertility increased, and thus Reduce crop production. Jianghan Plain Lake in our province, high groundwater table, low wetlands and more (groundwater level within 50 cm), soil organic matter content 1.79-4.62%, soil pH value 7.5-8.4, soil