摘要
北京地区的板栗基本上种植在以花岗岩、片麻岩为土壤母质的低山丘陵地带。该地带主要缺氮,其次缺磷,氮、磷饥饿是该地板栗生长结实的限制因子。实验研究证明,采收后根部施有机肥,萌芽期、开花期和果实迅速生长期追施氮磷复合肥(或氮肥),能提高土壤与树体的营养水平,促进树体代谢平衡和生长发育,对于增加栗实产量具有明显作用。
The chestnut trees in Beijing are planted in mountainous area and hi-lly land mainly of granite and gneiss. The shortage of nitrogen and pho-spherous in this region is a factor that limits the growth and fruiting ofthe trees. The experiment indicates that the supply of organic fertilizer forroots after nut plucking, and the supply af nitrogen-phosphorus complex fe-rtilizer (or nitrogen) at the phase of sprouting, flowering and rapid growingof nuts, not only raises the nutrition level of soil and tree body, improvesthe metabolic balance and chestnut growing, but also increases nut yield andimproves its quality.
关键词
板栗
矿质营养
限制因子
代谢平衡
castanea mollissima
mineral nutrition
limiting factor
metabolic
balance
chestnut quality
