The results showed the mixture of Difulai and Huangjia nature Brassinolide,the mixture of Difulai and Aifeng organic fertilizer whose effect of strengthen seedling were significant.

Ai Feng organic fertilizer can promote crop yields, improve crop qualities, strengthen crop resistance to environmental stress.

Under the condition of equal amount of soil nutrient, the Huimangfeng organic compound-mixing manure can increase the output 17.

An evaluation of Ordovician hydrocarbon source rock and its lower limit of organic abundance in Dagang area,Huanghua depression;

The restitution methods of the organic abundance are classified systematically based on the comprehensive analyses of these methods,and the advantages and disadvantages,as well as the applicable conditions of these methods are comprehensively compared.

Through organic carbon content,chloroform bitumen 'A' content and vitrinite reflectivity,the authors synthetically estimate the developed status of the area in Upper Paleozoic about source rocks thickness,organic abundance,organic type and the thermal evolution according to the geochemistry analysis on the hydrocarbon source rocks.

In the paper, advances on the classification of maceral, maturity, type and abundance of organic matter, hydrocarbon generation, migration and accumulation have been reviewed.

The authors summarized four main research respects about Lower Paleozoic marine carbonate rocks: (1) abundance and its affecting factors of organic matter; (2) existing forms of organic matter;(3) recovering methods and theories of the abundance of organic matter and hydrocarbon-generating potential; and (4) research on thermal maturity of marine carbonate rocks.