| 应用~(15)N示踪法对大豆氮钾营养规律与钾肥肥效的研究(1) |
| |
| 引用本文： | 陈魁卿,程岩,高妙贞,林桂范,赵玉臣.应用~(15)N示踪法对大豆氮钾营养规律与钾肥肥效的研究(1)[J].东北农业大学学报,1984(2). |
| |
| 作者姓名： | 陈魁卿 程岩 高妙贞 林桂范 赵玉臣 |
| |
| 作者单位： | 东北农学院农业化学教研室，东北农学院农业化学教研室，东北农学院农业化学教研室，东北农学院农业化学教研室，东北农学院农业化学教研室 |
| |
| 摘 要： | 经一年的~(15)N 框栽和田间试验证明,在气候干旱的条件下,单施氮肥增产效果不明显,在水分适宜的框栽条件下有一定增产作用。但单施氮肥过多(N_(15+45)),影响根瘤着生。在少量氮肥基础上施用钾肥对大豆生长、根瘤着生、抗逆性和产量都有明显效果,并提早成熟4—8天,这对我省防止早霜为害具有重要意义。氮钾肥配合对两品种大豆平均增产17—32%。
|
STUDY OF SOYBEAN NITROGEN-POTASSIUM NUTRITION AND THE EFFECT OF POTASSIUM FERTILIZATION BY THE USE OF ~(15)N AS TRACER |
| |
| Abstract: | One year of field experiment and frame culture with ~(15)N indicated thatunder dry conditions nitrogen fertilization alone had no obvious soybean yieldincrease,but in frame culture with appropriate water supply the yield was in-creased to a certain degree.Nevertheless over dressing of nitrogen fertilizer(N_(15+45)) affected the growth of root nodules.On the basis of low nitrogen application potassium fertilization had advan-tageous effects on plant growth,nodule formation,resistance to unfavorableconditions and yield of soybean.The time of ripening was promoted 4—8days earlier,which is of significant importance of protecting soybean from earlyfrost in Heilongjiang province.On average combined application of nitrogenand patassium to the two cultivars increased 17—32% of soybean yield. |
| |
| Keywords: | |
| 本文献已被 CNKI 等数据库收录！ |
|
