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通过对2005年全市3 025个点土壤样品有效锌含量检测结果分析表明,天津市有36.3%土壤缺锌,11.5%土壤严重缺锌。2011~2012年,选择天津市缺锌区域,在冬小麦、玉米、水稻、蔬菜和桃等作物上进行了锌肥试验示范工作。结果显示,科学推荐施用锌肥对作物增产、农民增收效果显著;通过试验示范初步确定了天津不同作物施用锌肥推荐量和施用方法,提出科学施用锌肥的对策措施。
Through the analysis of the available zinc content of 3 025 soil samples in 2005, the results showed that 36.3% of the soil in Tianjin is deficient in zinc and 11.5% of the soil is seriously deficient in zinc. From 2011 to 2012, zinc-deficient areas in Tianjin were chosen to test and demonstrate zinc fertilizers on winter wheat, corn, rice, vegetables and peaches. The results showed that it was scientifically recommended to increase the yield of crops and increase the incomes of peasants significantly. Through the experiment and demonstration, the recommended amount and application methods of zinc fertilizer applied to different crops in Tianjin were preliminarily determined, and the countermeasures of applying zinc fertilizer scientifically were put forward.