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1956年,曾在含少量的钴和镍,中量的锌,大量的铜,PH5.4的腐殖质沙土上设置试验.在容量为6公斤的盆中加入10克硝酸钾.荞麦种子是用各种不同浓度的硫酸铜、锌、钴的溶液处理6小时,然后在通风处晾干,翌日播种,每盆23株.间苗后每盆保留9株.试验结果表明,铜、锌处理无效,这是因为土壤本身能完全满足供应这些微量元素;提高微量元素监类的浓度反会降低产量.铜与锌的混合液能增产8%.由于土壤中缺乏钴,用硫酸钴(浓度0.001%)处理种子能增产11%.在参有锌和铜的
Experiments were set up in 1956 on humus sandy soil containing small amounts of cobalt and nickel, medium amount of zinc, large amount of copper, and PH5.4, and 10 grams of potassium nitrate was added to a 6 kg pot. Different concentrations of copper sulfate, zinc, cobalt solution for 6 hours, then air-dried place, the next day sowing, 23 per pot .After the seedling reserve of 9 per pot.Experimental results show that copper and zinc treatment is invalid, which Because the soil itself can fully meet the supply of these trace elements; improve the monitoring of trace elements concentration will reduce the yield of copper and zinc mixture can yield 8% due to the lack of cobalt in the soil, with cobalt sulfate (0.001% concentration) treatment Seeds yield 11%. In the participation of zinc and copper