This paper summarized the forms and harms of the heavy metal pollution in soil. Furthermore, remediation measures of the heavy metal pollution in soil are mentioned. Finally, the problems and the research directions for further research on the remediation techniques were pointed out. Our object is to provide the scientific basis for preventing and controlling heavy metal pollution, and maintain ecological safety.

We took random samples from one-year-old and two-year-old Prunus spp.grafted seedlings in Simingshan of Ningbo City.Using two characters(root diameter and height) as standards,we graded grafted seedlings by statistics and cluster analysis methods.Combing the produce cases,we regulated the analytic results and got the grading standards of Prunus spp.grafted seedlings in Ningbo City.

我国是茶树(Camellia sinensis)的原产地[1],茶树种质资源十分丰富[2].茶树的形态学多样性决定了茶树在园林绿化领域有巨大的应用潜力,并引起了学界的关注,韩文炎[3]等就茶树在园林绿化应用上的共性进行了探讨,认为茶树种类丰富、形态多样、花期长、易造型、繁殖能力强,适合作为观花观叶植物和构建盆景、绿篱的树种,并具有古树名木的特殊价值.

通过对花叶络石采用不同方式进行耐荫性试验得出:花叶络石可以在遮荫的情况下,获得较好的枝条生长量和叶色表现,以及这种特性在育苗和园林绿化上的应用。

Through investigations into a portion of Chinese ancient books , it was discovered that the emergence of Chinese ancient grafting was enlightened by the phenomenon of two branches of different trees twined together in nature .Before the WesternHan Dynasty (206 BC -25 AD), grafting was had been applied in production .Ancient people used it to shorten productive cycle , keep special character of species and expand reproduce coefficient . Ancient people also summarized four methods and six methods from grafting practice , and discovered many factors impacting on the survival rate of grafting such as selection of scion and stock , grafting time and grafting technique .The ancients put forward the conception of gas and liquid to explain the survival principle , and posed the view that plants with close relation applied in grafting are easy to survive on the base of summarizing a great deal of grafting practise .[ Ch , 18 ref .]

从剖析周公宅水库库区淹没线以上林木所有权、林地使用权、收益权转让政策入手,探讨了宁波市在国家尚未出台森林、林木、林地使用权流转具体办法的前提下,森林、林木、林地流转方式实践的合理性,认为这种流转方式和经济补偿机制是对我国林地林权制度改革的大胆尝试,具有前瞻性和可操作性,有推广价值。