The main problems in the current corn grain machine collection

The high rate of breakage is currently the main problem of corn grain harvesting, and the highest rate of breakage is the high water content of corn kernels.A large number of studies have confirmed that the two are highly correlated, and that the rate of breakage is reduced when the reduced of water content. Most studies show that the grain volume is reduced to about 20%. When the rate of breakage is reduced, the test results of Hebei Province in recent years are also consistent with this view.

Solving the problem of high corn kernel machine crushing rate requires the cooperation of agricultural machinery and agronomy, the harvesting machinery needs improvement but can not rely solely on agricultural machinery; and the improved agronomy, that is, the characteristics of early varieties, fast dehydration and other characteristics have great potential, and it is also the main direction of the improvement.

Principle of dehydration of corn kernels

The Brooking study shows that the pattern of corn grain moisture loss is divided into two stages, the first stage begins with grain filling and ends with physiological maturity.

The water loss at this stage is called the developmental dehydration process related to grain filling; the second stage begins with the physiological ripening to the volume of suitable grain harvesting, which can be called the dehydration process characterized by grain drying. Weather factors, especially the sun, wind and rain, which are related to temperature and humidity, generally radiate 0.3~0.8 percentage points per day. High temperature and low humidity are beneficial to the rapid dehydration of corn grain fields, which can reduce 1 quantity per day, while rainy weather When the conditions are the same, whether the plant type is delicate, the number of leaves, the diameter of the ear shaft, the distribution of the grain and the quality score become relatively important, and will have an effect on the speed of dehydration.