The plant height was correlated highly with fresh haulm weight and leaf area index , with the correlation coefficients being 0.9350 and 0.8488 , respectively .
The genetic model and the relationship between the character of haulm height and the tolerance index of leaves seeding stage were studied by the method of quantitative genetics in maize tolerating low-potassium in low-potassium field .
Exogenous DNA of tropical sorghum with characters of tall plant height , more juice in haulm , high sugar content , diseases resistance , high biomass and long growth duration , was introduced directly into local sorghum varieties through pollen tube pathway , in order to study the feasibility of this technique used in sorghum breading .
The finite element model was established according as the material and structure of tool , load was used as three way cutting force of blade , tool petiole as fixed bracket , then , distortion and stress distributing of tool haulm was computed . High rigidity tool that can satisfy machining requests was designed .
Concrete column is a kind of member witch mainly loads axially pressure , sometimes with bending or shearing force too , for example , the columns in frame and compressive haulm etc. Concrete column is very important in structure . In case it is broken , it ’ s possible that the whole structure will collapse .
