To realize the maximum utilization of land, in the cultivation of corn, it is necessary to determine the optimum planting density of corn. If corn is planted densely, it will affect the growth of corn and limit the increase in the yield and quality of corn, but it is too thin. It will also cause problems such as waste of land resources and difficulties in operations. Therefore, in order to find the best planting density of corn, we can use the leaf area detector to conduct inspections in the process of planting, and analyze the leaf area index of corn by different planting densities. And the impact of yield, to provide a reference for screening the optimum planting density of local corn, and ultimately determine the best planting density of corn.
The period of use of the leaf area tester was corn jointing stage, big bell mouth stage, silking stage, grain filling stage and wax ripening stage. The objects to be measured were corn crops of different densities and the results showed that different planting densities were The overall change in leaf area of ​​the population was basically the same, and the leaf area index showed a single-peak curve change. As the growth period increased first, it gradually declined after the silking period reached its maximum value. At each growth stage, the leaf area index increased with the increase of the planting density, and the peak density of the low density population was higher than that of the low density population. From the jointing stage to the silking stage, the planting area index of different planting densities increased with the difference in the growth period. From the silking stage to the wax ripening stage, the leaf area index of different planting densities decreases with the difference in the growth period.
Not only is China's important food crops, but also important feed ingredients and industrial raw materials, so the use of leaf area detectors to carry out research on corn dense planting, to further improve the utilization of light and temperature resources of corn crops, relying on the maize group to play a potential increase in production, to carry out Scientific maize planting and realizing super high yield in corn are of great significance. At the same time, they have a positive role in promoting the healthy development of the corn industry and are an important way to achieve high-yield and high-quality cultivation of modern corn.
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