This paper analyses the applied situation and the development trends,and points out the high efficiency of utilizing cotton top-cutting machine,reducing labor intensity,raising incomes and providing a good foundation for bing tuan cotton product.

This paper first introduces that the whole structure and working principle and profiling mechanism of one kind of cotton top-cutting machine,carries on the simulation analysis of cotton top-cutting whole machine to its movement with unigraphics software.

Now the utilization cotton to pinch off the work machinery passes through the massive pinch off the works and the experiment proved that, has the very big short coming, in particular in the cotton pinch off the work high control, has the very major problem.

Changes of Routine Chemical Components in Burley Tobacco from Topping to Curing;

Effects of applying auxin and potassium fertilizer on root characters and leaf quality of flue-cured tobacco after topping;

Effect of topping on the root activity and endogenous hormone content of cigar wrapper;