The chemical properties of the soil are similar in the same area, but the bulk density of the soil is not the same, which leads to great differences in the growth of the tree. It is often seen in the context of scrubbing the trees that rubbing trees grow particularly well on high fill soils with poor fertility but loose (low bulk density). It can be seen that the soil bulk density is closely related to the growth of the scrub tree. The bulk density of the soil can be determined using a soil bulk density meter. Wechat scans, information is known! : Air Freshener Can,Golden Lacquer Air Freshener Tin Can,Rust Remover Aerosol Can,Deodorant Spray Tin Can Guangzhou Futen Plastic & Metal Products Co.,Ltd , https://www.futencan.com
The determination of the soil bulk density and the growth of the roots of the scrub tree were determined by the soil bulk density meter and were mainly carried out in the 9 and 15 years old scrubber plantation forests in the experimental forest farm. At the same time, Jingxian, Fuyang, Huaihua and Shen in the Huaihua region were also measured. Ling and other counties made additional surveys. For the root system, a method with less than 2 centimeters was used. Each layer of 0 centimeters was mechanically excavated and the soil bulk density was measured in layers. A total of 2 trees were surveyed, 380 soil samples were taken, 360 root samples were taken, and the root system was less than 0. 3 cm, 0.3 to 1.0 cm, 1.0 to 2.0 cm, greater than 2. Four centimeters of O cm were used to count their dry weight. The determination of the soil bulk density and the growth of the rubbing tree seedlings was carried out in the nursery of the Institute. It artificially constituted five kinds of soil with different bulk density and was repeated three times. The determination of the height of the bulk density and the height of the rubbing tree and the growth of the diameter were carried out in the rubiaceae high-yielding experimental forest of Xiaoxiashan Forest Farm in Xiangtan County. 50 samples and root systems were set on the forest land with high management and management level in 9-10 years. The weight of the dense layer (20 to 30 cm), taking a total of 2 samples, and surveying the tree height and DBH of i5 trees around the sample.
After determining the bulk density by the soil bulk density analyzer, it can be determined that the soil bulk density is closely related to the growth of the subterranean ground part of the scrub tree, and the compactly structured soil is unfavorable to the growth and development of the rubbing tree root system. The optimum bulk density of rubbed trees was within 1.2 and the growth was generally between 1.2 and 1.3. The amount of roots in the soil volume exceeding 1.3 units was significantly reduced and was not conducive to the growth of rubbed trees. The bulk density of the soil has a great influence on the high-path growth of the seedlings. The soil bulk density suitable for the growth of the seedlings is about 1.2. The soil bulk density can reflect the structure of the soil in a concise manner. It can also reflect the water permeability, aeration, and resistance to root extension of the soil. The growth of rubbing trees is closely related to these factors. Therefore, the soil density can be selected when rubbed trees are planted. As an important indicator. 