摘要
本研究对果粮间作复合群体下土壤磷素营养特性进行了探讨。初步结论是,由于果树和粮食作物间的相互影响,使得土壤在湿度、温度、pH值及作物根系呼吸、吸收、分泌等方面产生了变化。因距果树的远近不同,上述变化也各异,结果影响到各区(将东西两侧各按距果树距离划分为冠下区、近冠区和远冠区)的土壤微生物活动、土壤磷酸酯酶活性及各种无机态磷的数量比例、溶解度,加之果树和粮食作物对磷素的竞争吸收,从而产生了距果树不同距离的各区间全磷及速效磷含量的差异,这种差异导致了磷肥肥效的不同。
Because fruit trees and grain crops affected each other, there were changes in soil moisture, temperature and pH value as well as respiration, absorption and secretion of crop roots. Subsequently, the number of P bacteria and their P-dissolving intensity, phosphoesterase activity, solubility, and ratio of various types of inorganic P varied with the distance from trees. All of these were accompanied by competitive absorption between fruit trees and grain crops, resulting in difference of total and available P contents in different soil horizons.
出处
《山东农业大学学报（自然科学版）》
CSCD
1992年第2期186-190,共5页
Journal of Shandong Agricultural University：Natural Science Edition
关键词
间作
磷细菌
磷酸酯酶
果树
粮食
intercropping
phosphorus
phosphorus bacteria
phosphoesterase
