The harm degree of the rice blast and the rice sheath blight was detected according to the distance characteristic, at present there had not defined the only method of digital image distance.

This paper analyzed the various occurrence causes of rice blast,which happened in a large area of Heilongjiang province in 2005.

The methods of estimation of relative parasitic fitness (PF) of rice blast races on different cultivars were stuided in the greenhouse and the field experinment.

Field Efficacy of 27.12% Cu2(OH)2SO4 SC(Cupr0xat) for Controlling of Ustilaginoidea virens;

) on Magnaporthe grisea, Rhizoctonia solani, Fusarium moniliforme, and Xanthomonas oryzae pv.

) on Magnaporthe grisea, Rhizoctonia solani, Fusarium moniliform, and Xanthomonas oryzae pv.

Transformation of Bar Gene to Magnaporthe grisea by Agrobacterium tumefaciens EHA105;

Isolation,Screening and Identification of Antagonistic Microorganisms Against Magnaporthe grisea;

mRNA Differential Exppression of Rice Induced by Elicitor from Magnaporthe grisea;

The control effect of Wengmeiqing(validamycin) and its mixture on rice sheath blight disease was tested in field.

The deep-water rice varieties from the countries of South Asia offered by IRRI and from Guangxi province were analyzed in classification, submerge tolerance and resistance to rice sheath blight during 2000-2003 in Nanning.