A method for measuring the utilization rate of phosphorus fertilizer in forest trees
A utilization rate and phosphate fertilizer technology, applied in the field of soil agrochemical, can solve the problem that the utilization rate of phosphate fertilizer cannot be reasonably determined.
Active Publication Date: 2016-08-17
RUBBER RES INST CHINESE ACADEMY OF TROPICAL AGRI SCI
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[0008] The purpose of the present invention is to provide a method suitable for measuring the utilization rate of phosphorus fertilizer in perennial trees, so as to solve the technical problem that the utilization rate of phosphorus fertilizer in forest tree nutrition diagnosis and fertilization cannot be reasonably determined
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[0018] When a kind of method of measuring forest phosphate fertilizer utilization rate of the present invention is carried out, at first selected 75cm * 45cm area in woodland as the nylon net bag embedment area, in this area, collect 5 different depth soil samples with soil drill with plum-blossom pattern distribution method, The collection depths are 15-20cm, 20-25cm, 25-30cm, 30-35cm, 35-40cm, and 40-45cm soil layers, and the soil samples at the same depth are mixed as a sample. After the soil samples are air-dried and ground through a 2mm sieve, The total phosphorus content was determined as the background value of soil phosphorus at different depths. Then use a shovel to dig a hole with a length of 46 cm, a width of 15 cm, and a depth of 20 cm in this area. According to the test requirements, a nylon mesh bag pre-filled with phosphate fertilizer or a mixture of phosphate fertilizer and other fertilizers and sealed is placed in the hole parallel to the ground, layered. Back...
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Abstract
The invention provides a method for measuring the utilization rate of forest wood phosphate fertilizers. According to the method, nylon net bags are selected, phosphate fertilizers or mixtures of the phosphate fertilizers and other fertilizers are charged into the nylon net bags, after the net bags are buried into proper soil layers of forest land soil for a certain time, the residual fertilizers in the nylon net bags and the soil with a proper distance from positions above, below and around the nylon bags are collected, and soil phosphorus analysis is carried out; the residual quantity of the phosphate fertilizers is calculated according to the sum of the residual quantity of the phosphate fertilizers in the nylon net bag and the residual quantity of the phosphate fertilizers in the soil, and in addition, the utilization rate of the phosphate fertilizers is calculated according to a formula. The method can be used for studying the utilization rate of the phosphate fertilizers of the perennial forest wood, and has higher practical values on forest wood nutrition diagnosis and reasonable phosphate fertilizer application to forest land.
Description
technical field [0001] The invention relates to a method for measuring the utilization rate of phosphorus fertilizer of forest trees, which belongs to the technical field of soil agrochemicals. Background technique [0002] Phosphorus is one of the indispensable nutrient elements for the growth and development of forest trees. It is a component of important organic compounds in forest trees, and participates in the physiological processes of forest trees in various ways. It plays an important role in the growth and development, physiological metabolism, yield and quality of trees. play an important role. The scientific application of phosphorus fertilizer is one of the important measures to ensure the fast growth and high yield of forest trees, and it is also the basic work for the improvement of forest soil fertility. At present, the calculation methods of phosphate fertilizer fertilizer utilization rate are: 1) difference method, that is, the nutrient amount absorbed by p...
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IPC IPC(8): G01N33/24G01N1/40
Inventor 吴小平王文斌郭海超罗雪华王大鹏张永发
Owner RUBBER RES INST CHINESE ACADEMY OF TROPICAL AGRI SCI