论文部分内容阅读
向日葵是需钾肥较多的作物,为探明其合理施钾量和施钾对吸收磷素的影响,我们利用放射性~(32)P 和~(86)Rb 进行了研究分析。一、试验材料和方法1.取普通耕层土壤,进行盆栽。每盆装土25斤,土壤含氮45ppm、磷10.5ppm、钾135ppm,每盆内基肥折合尿素20斤/亩、过磷酸钙60斤/亩,氯化钾分为31斤/亩、15.5斤/亩、7.7斤/亩3个处理,以不施氯化钾
Sunflower is a crop that needs more potassium fertilizer. In order to find out its reasonable amount of potassium application and the effect of potassium application on phosphorus uptake, we studied the radioactive (32) P and ~ (86) Rb. First, the test materials and methods 1. Take the ordinary top soil, potted. 25 pounds of potting soil per pot, soil nitrogen 45ppm, phosphorus 10.5ppm, potassium 135ppm, equivalent to 20 kg urea / basalt fertilizer per basin, 60 kg / acre of calcium phosphate, potassium chloride is divided into 31 pounds / mu, 15.5 kg / Mu, 7.7 kg / acre 3 to not apply potassium chloride