The results indicate that tending with special long-term man-caring on schima superba biological fire-prevention forest belt is to be better for tree height, DBH, crown mean width growing than that of regular tending, and labour-saving, cost-saving and efficiency-enhancing are achievable.

This report showed the present advances of cotton gone engineering,in transgenic cotton vesearch gene engineering must be combined woth cotton conventional breeding .

Participatory plant breeding(PPB),oriented by farmer s demand and extruded by their leading and participation,can be an important complement of conventional breeding system.

Although to rely on conventional breeding techniques have bred many good varieties,but with the economic development and improvement of people\'s quality of life, the quality of soybean put forward higher requirements.

Study on general breeding in Brassica napus;

This article has summarized the general breeding methods and biotechnological breeding,especially present situation and developing tendency of the genetic breeding,and has analyzed the Status and stratagem of breeding in China.

Based on the general breeding method of cutting the stamens with pollenization,the hybridized young embryo was inoculated on the different media using saving embryo techniques in the period of 35 to 55 days after pollenization.