Measurement model for estimating demanded nitrogen quantity of high-yield phyllostachys praecox forest

Abstract

Provided in the invention is a measurement model for estimating a demanded nitrogen quantity of a high-yield phyllostachys praecox forest. The invention, which belongs to the technical field of the forestry, discloses a prediction model for estimating a demanded nitrogen quantity of a nitrogenous fertilizer for a high-yield phyllostachys praecox forest. According to multi-year fixed-point and large-sample (n=5) analysis and statistics, a model is obtained: N / 667m<2> = [1- 0.14*N1 / 667m<2>-0.32*N2 / 667m<2>+1.53*(avail)N3-7.5*SOM]+22.5. According to the invention, quantitative calculation of a demanded quantity of a nitrogenous fertilizer during a phyllostachys praecox growth process is realized and soil testing for formulated fertilization is completed. The high-yield cultivation technical content of the phyllostachys praecox forest can be perfected and enriched and the operation and management level can be improved. An optimal nitrogen fertilization amount recommendation plan is provided based on the phyllostachys praecox forest growth stage, the current land fertility situation, and the high-yield bamboo shooting growth need; and the plan can be implemented precisely, fixed-amount fertilization is realized, the economic benefits are increased, and the fertilization cost is saved. Besides, the soil ecological environment can be improved and protected and operation objectives of fertilization saving, effect enhancement, and high yield cultivation can be achieved.

Description

technical field [0001] The invention belongs to the technical field of agronomy and forestry, and proposes a prediction model for quickly estimating the demand for nitrogen in fertilizers in the growth stage of a high-yield thunder bamboo forest for bamboo shoots based on an intensive management model. Background technique [0002] Thunder bamboo (Phyllostachys praecox) is a plant of the genus Bambusa in the Gramineae Bamboo subfamily. It is mainly distributed in the mountainous and hilly areas of the south of the Yangtze River in China. It has been planted in large quantities since the 1980s. Due to its high benefits, especially after the cultivation of organic materials in late autumn and early winter has facilitated cultivation , at the end of December, shoots appeared in January, which greatly increased the market price, and the economic benefits were remarkable. The net income per mu reached 15,000-25,000 yuan. At present, its planting area has been promoted in Zhejiang,...

AI Technical Summary

Problems solved by technology

To sum up, the problems existing in the prior art are: there are few reports on the demand law of thunder bamboo forest for specific nutrient elements, and the effect of fertilization to increase production. There is a synergistic effect between elements, and the yield-increasing effect of a single nutrient needs to play a role under the comprehensive action of other environmental factors, which is the difficulty in solving the quantitative determination of the yield-increasing effect of nutrients