The quality of the soil environment has a very important influence on the yield increase of corn. A good environmental soil can enable corn to exert its potential for yield increase. Soil bulk density is an important indicator of soil quality. Soil bulk density is different, and the physical properties such as effective water content, thermal conductivity, and gas ratio are different. The influence of soil bulk density on the growth of corn has always been somewhat serious, but the combination of aboveground and underground parts is still relatively rare. To this end, the impact of soil bulk density on seedling growth of maize was studied systematically to find the suitable soil bulk density indicator for corn growth. Maize high yield cultivation basis. Determination of soil bulk density recommends using a soil bulk density meter for the determination.

The result of soil bulk density measurement by soil bulk density meter was very accurate, and the effect of soil bulk density on the dry root weight of maize was consistent with the root length performance trend. That is, as the soil bulk density increases, the root dry weight gradually decreases. Therefore, from the viewpoint of favoring the growth of roots, the soil with heavy texture in agricultural production should be deep plowed and early cultivating and other measures to loosen the soil and reduce the research weight of the soil. This will not only make the root system deeper, but also benefit the roots. The increase in volume. The linear regression between maize plant height and soil bulk density was well-accepted, that is, the higher the soil bulk density was, the lower the corn plants were. This is exactly the same as the change in root length, but there is no significant change in root length, and the soil bulk density increases from 1. plus g/cm' to 1.609/cm. When the spider height decreases from 86.5 cm to 78.0 cm, it decreases. The root length of each layer decreased by about one time. Only if the soil is suitable for the elasticity, it is the most favorable for the growth of the leaves, which is different from the response of the root growth to the soil bulk density.

The growth of corn above ground needs a suitable soil tightness. Although the looser the upper soil, the faster the growth of maize plant, the biomass and leaf area are obviously not as good as the intermediate treatment. In overly loose soils, corn grows faster in the longitudinal direction and slower in the lateral growth. The plants look leaner than the overall L, while the middle-processed corn grows steadily and strongly. This will be corn. The important foundation of high yield. On the other hand, high-concentration corn on the upper reaches of the soil has a significant decrease in plant height, leaf area, and dry weight above the ground, and it is difficult to obtain high yields when it grows short and short.

The determination of bulk density by the soil bulk density apparatus and the analysis of the growth status of the maize found that a strong soil compaction is required to cultivate strong maize seedlings, but the two parts of the ground and underground react differently to the soil bulk density. As the bulk density of the soil increases, the elongation of the root system decreases linearly, and the root volume also decreases linearly. In addition, the tighter the soil, the worse the water permeability and permeability, and the root system is difficult to grow well.

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Crash Barrier

Crash Barrier

Hot dipped galvanized Steel Guardrail /Highway fence and Guardrail posts are mainly used for safety traffic barrier protection on highways and first-class highways at home and abroad. Q235 material is used domestically, and Q345 material is used abroad. The steel plate is formed by cold bending and then galvanized and electrostatically sprayed.

Beam Guardrail has strong corrosion resistance, bright and beautiful appearance, and high anti-collision strength, which meets the standards of the Ministry of Communications. , In line with GB / T31429.1-2015 "Anti-corrosion Conditions of Expressway Traffic Engineering Components" standard. Requirements of "Waveform Steel Guardrail Part 1: Double Waveform Motorway Guardrail"

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