THE CHARACTERS OF POTASSIUM AND EFFECT TO WINE-GRAPES ON AEOLIAN SAND SOIL IN EXPERT SYSTEM
The paper reports the study on validity of potassium and absorbing and using of wine-grapes grown on aeolian sandy soil in Ningxia. The result shows that the content of slow release potassium and available potassium is low. The amount of available potassium and fixed potassium increase with raising amount of applied potash. And slow release potassium, which can be replenished quickly when available potassium is depleted. But slow release potassium is exhausted also, the buffering capacity of supplying potassium is low. The content of potassium in grains and plants increase with increasing amount of applied K in different treatment. The sequence of potassium recovery rate is as follows: sand-loam > fine-sand > coarse-sand. The capacity of supplying potassium in high-fertility soil is better than that in low-fertility soil, and rate of potassium recovery is high. Potassium nutrient affects growth and quality of wine-grapes.
Aeolian sandy soil Wine-grapes Potassium nutrition
Tao Zhou Jinxiu Liang Fengxia Li Feng Li
Institute of Agricultural resources and Environment, Ningxia Academy of Agriculture Forestry Science Institute of Agricultural resources and Environment, Ningxia Academy of Agriculture-Forestry Science
国际会议
北京
英文
599-604
2005-10-14（万方平台首次上网日期，不代表论文的发表时间）