A rate-variable fertilizing machine used for corn and achieving self-adaptive line spacing

Abstract

The objective of the invention is to provide a rate-variable fertilizing machine used for corn and achieving self-adaptive line spacing. The rate-variable fertilizing machine mainly includes image taking devices, line spacing adjusting devices, ultrasonic wave detecting devices, rate-variable fertilizing devices, soil covering and pressing mechanisms, four-bar feeler mechanisms, a rack and a fertilizer tank. The rate-variable fertilizing machine is mounted to a high clearance tractor. A machine vision technology is adopted. A host computer can output pulses having different frequencies to therate-variable fertilizing devices according to plant growth vigour information, thus achieving rate-variable fertilization, effectively saving chemical fertilizers and increasing the utilization rateof chemical fertilizers. In addition, an ultrasonic wave detection technique is adopted, distances between the machine and plants are detected by ultrasonic wave detectors, and the host computer adjusts fertilizing positions in real time through the line spacing adjusting devices according to the distances, thus adapting to different spacing values and ensuring optimum fertilization effects.

Description

technical field [0001] The invention relates to the field of agricultural fertilizing machinery and equipment, in particular to a corn variable fertilizing machine that adopts machine vision and ultrasonic detection technology and can adapt to row spacing. Background technique [0002] Corn is an important food crop and feed source, and is of great significance in solving human food problems. Fertilizer application is an important guarantee to achieve high agricultural yield, high efficiency and food security. Practice has proved that the big trumpet mouth period is the period with the greatest nutrient demand, and reasonable topdressing nitrogen fertilizer in this period can effectively promote the growth of corn and increase the yield of corn. However, due to the relatively tall corn plants during this period, it was difficult for ordinary machines to enter the ground, so artificial topdressing or small topdressing machines are often used for topdressing. The efficiency ...

AI Technical Summary

Problems solved by technology

In addition, it is difficult to apply chemical fertilizers at the optimal fertilization position itself, and the direction of the tractor will be slightly adjusted left and right when driving, causing the actual fertilization position to deviate from the optimal fertilization position, resulting in a low utilization rate of chemical fertilizers, and it is easy to cause injury phenomenon

Images