Method for planting and water-fertilizer management of populus tomentosa carr.

Abstract

The invention relates to a method for planting and water-fertilizer management of populus tomentosa carr.. The method includes the steps of afforestation and water-fertilizer management, wherein specific varieties, planting density, and water-fertilizer management are adopted; the water-fertilizer management includes two times of fertilization conducted at the end of April and the end of June respectively, wherein a nitrogen fertilizer and a potassium fertilizer are applied synchronously, 1 / 3 of the nitrogen and potassium fertilizers is applied at a first time, 2 / 3 of the nitrogen and potassium fertilizers is applied at a second time, and a phosphorus fertilizer is applied at the two times in equal amounts; a 20-30 cm deep hole is dug on each side of the populus tomentosa carr., the distance of the trunk is determined according to the projection of the canopy, and soil covering and irrigation are conducted immediately after fertilization. In conclusion, by adopting populus tomentosa carr. S86, a field moisture capacity of 75%, an annual nitrogen application amount of 304.8 kg.hm<-2>, and a planting density of 4m*6m, the stocking volume of the populus tomentosa carr. is the largest,and the growth and development of the populus tomentosa carr. are better.

Description

technical field [0001] The present application relates to the field of plant cultivation, in particular to a planting and water and fertilizer management method of Populus tomentosa. Background technique [0002] Wood is the only renewable resource among the four major materials (cement, steel, plastic, and wood) in the world today. However, with the depletion of natural forest resources worldwide, there is less and less wood available for processing, which poses a great threat to the development of our national economy and the protection of the ecological environment. Therefore, how to obtain a higher return from limited land resources and capital investment in the short term is the key to alleviating the contradiction between timber supply and demand. The focus of solving the contradiction between my country's future timber supply and demand should be on the innovation and breakthrough of forestry science and forestry cultivation technology with tree breeding as the core....

AI Technical Summary

Problems solved by technology

[0004] Water and nutrients are the most important environmental factors affecting the growth of trees. In forestry production, when the supply of soil moisture and nutrients is insufficient, irrigation and fertilization are usually used to meet the needs of trees for water and nutrients. However, simple irrigation or fertilization often Can not greatly improve the growth of forest trees. Studies have shown that the coupling effect of water and fertilizer can improve water and fertilizer use efficiency, prevent soil and water pollution and fertilizer loss caused by unreasonable fertilization, and make the ecological environment a virtuous cycle

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