期刊论文

中文

土壤通报

0564-3945

2011

42

2

438-442

10.19336/j.cnki.trtb.2011.02.037

国家自然科学基金（30671206） 湖南省自然科学基金（07JJ3074）资助

本校为第一机构

从植物体本身着手研究植物氮素高效利用的机理与途径,这是近几年来植物氮素营养研究的热点之一,而调动植物液泡中的硝酸盐使之得到更高程度的再利用,这是提高植物氮素利用效率和降低植物体内硝酸盐含量的途径之一。试验采用土培试验,研究叶面喷施质量分数为1%的氯化钾溶液对油菜角果初期和收获期植株硝酸盐累积再利用的影响,以喷施质量分数为1.17%的硫酸钾溶液（要求氯化钾和硫酸钾溶液中钾离子的物质的量浓度相同）和清水作为对照,在开花后期开始喷施,连续隔日喷洒15天,喷施部位在茎和叶,重点喷洒叶的背面,尽量不喷施至叶柄,于角果初期和收获期采样。结果表明,喷施氯化钾溶液能显著降低油菜角果...

Mechanisms and means about high efficiency utilization of nitrogen were researched from plant which has already been a hot topic of the study of plant nitrogen.The effects of spraying 1% KCl solution on accumulation and reutilization of nitrate in oilseed rape in initial siliquing stage and harvesting stage,which were studied by using soil cultural experiment.Controlled by Spraying 1.17% K2SO4 solution（Potassium chloride and potassium sulfate solution requirements in the same concentration of potassium） and water,the stems and leaves were spr...