The genetic diversity and phylogeny of the rhizobia isolated from nodules of rice bean (Vigna umbellata L.) grown in Hubei were studied using 16S-23S rDNA intergenic spacer (IGS) PCR-RFLP and partial 16S rRNA gene sequencing.
Since the Controlled Alternate Partial Rootzone Irrigation (APRI) was proposed, many specialists who are devoted to water-saving irrigation have done many researches about this new irrigation technology such as the growth and assimilation ability of crop root, the growth of maize, the physiological condition, yield and and water use efficiency (WUE).
In addition, the complete 18SrDNA and partial 28SrDNA sequences of 22 species Collembola were analyzed. Combined with the relative sequences of other hexapods and representative arthropods, the phylogenetic hypothesis was generated by using MP (Maximum Parsimony), ML (Maximum Likelihood), and BI (Bayesian Inference). The major results were as follows:1 .The community structure of soil animals in the tropical and subtropical forestsThe soil animals of tropical rain forest in Jianfengling Mountain were investigated.
Nitrogen changes of solid wastes involved in nitrogen mineralization,ammoniavolatilization, nitrification and denitrification. Adding the nitrifiers to feces of animal and poultry, reduce nitrogen loss through partial NH4+ - N were transformation nitrate or nitrite.
Most of this area pH between 5.3 to 5.7 .The soils partial to acid.
5 The results of partial correlation analysis on the relation between crop yield and soil available nutrient showed that there was a significant negative correlation of available Fe with the crop yield but a significant positive correlation of available P, Ca, S with crop yield.
The results of the correlation analysis showed that > the 0.25 mm water stable aggregate content was the maximum affecting factor to soil erosion, the partial correlated coefficient was 0.9728, and then were soil coarse grain and soil shear strength, the partial correlated coefficients were 0.8879 and 0.6020 respectively.
The results of this study, by comparing each factor's partial correlation coefficient, indicate that pH value and the concentration of REEs in soil and some organic ligands, i.e., EDTA and FA, play important roles in the environmental behaviors and bioavailability of REEs in soil.
By means of the diffusion law and the equation of state for ideal gas, theexpressions of the coefficients in the phenomenological equations were deduced. Theeffects of temperature, water content and partial vapor pressure on thephenomenological coefficients were also discussed.
The new method, considering the respiration rate and gas permeability simultaneously, computed the respiration rate by comparing partial pressure of gases which was calculated with material balance formula and measuring value actually within package.
Three treatments, i.e. conventional flood irrigation (CFI), fixed 1/2 partial rootzone drying and the other 1/2 part irrigated (PRD), and alternate 1/2 partial rootzone drying and irrigating (ARDI), were designed. The EnviroSCAN probes and heat pulse sensors were used to monitor soil water dynamics and sap flow respectively.
We also compute the Euler characteristic of the space of partial flags containingnt and give a connection with hyperplane arrangements.
Then theG0-orbit structure ofZ is described explicitly by the partial Cayley transforms of a certain hermitian symmetric sub-flagF?Z.
Semi-invariants of quivers can be constructed by taking admissible partial polarizations of the determinant of matrices containing sums of matrix components of the representation and the identity matrix as blocks.
We define a partial order on the set No,c of pairs (O,C), where O is a nilpotent orbit and C is a conjugacy class in A(O), Lusztig's canonical quotient of A(O).
We also give formulas for intersection pairings on resolutions of singularities (or more precisely partial resolutions, since orbifold singularities are allowed) of the quotients.