Method for continuous multi-year sampling and measuring of perennial artificial grassland biomass

Abstract

The invention relates to the technical field of artificial grassland productivity measurement, in particular to a method for stably and accurately measuring perennial herbaceous plant aboveground biomass of perennial artificial grassland under a root sampling condition. According to the method, a fixed quadrat is arranged in the artificial grassland; then the center point of the fixed quadrat serves as the circle center, the fixed quadrat protection area with the radius of 1.5 m continues to be arranged, and due to the arrangement of the protection area, it can be avoided that due to root system sampling around the fixed quadrat, plant density changes, and ground yield measurement is unstable and inaccurate. The area outside the protection area is divided into a plurality of equal parts asrequired, and root system sampling is performed outside the protection area, so that the determination of the productivity of the perennial artificial grassland cannot be influenced no matter how many root samples are taken in one year or the root samples are taken in successive years. The determination method can achieve the purpose of accurately and continuously monitoring the perennial artificial grassland root system and the aboveground productivity.

Description

technical field [0001] The invention belongs to the technical field of ecological measurement, in particular to a method for continuously sampling and measuring the biomass of perennial artificial grassland for many years. Background technique [0002] With the implementation of my country's "dairy industry revitalization" and "grain to feed" and other policies, the area of ​​artificial grass is increasing year by year, and the establishment of artificial grass in my country is usually dominated by perennial herbaceous crops. In scientific experiments and production practices, in order to judge the perennial For the growth and development of herbaceous plant roots and their impact on aboveground productivity, it is necessary to take plant root samples during the growing season to monitor the morphological and physiological characteristics of plant roots, so as to judge the relationship between root system characteristics and aboveground productivity. In addition, perennial ar...

AI Technical Summary

Problems solved by technology

In terms of the scientific nature of the measurement, the random sampling method may have the problem of sample overlap, that is, the random sample may be thrown again at the place where the root sample was taken, which makes the above-ground productivity measurement inaccurate; Due to the overlapping of squares, researchers usually avoid the place where the root sample is taken, which violates the principle of the random sample method; from the perspective of consumables, the random sample method needs to make multiple sample squares, which increases the cost ; moreover, the existing studies are either for the purpose of studying the root system without considering the aerial part

The existing methods for measuring root and aboveground biomass are considered separately, and the influence of root sampling on aboveground biomass measurement is not considered.

[0004] Therefore, under the conditions of taking root samples in perennial artificial grassland, it is obviously unreasonable to still use random quadrats to measure root and aboveground productivity

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