Grassland ecosystem based new germplasm resource and new variety evaluation method for pastures

Abstract

The invention discloses a grassland ecosystem based new germplasm resource and new variety evaluation method for pastures. The grassland ecosystem based new germplasm resource and new variety evaluation method includes establishing a planting area; performing single sowing and combined sowing of pasture varieties and new varieties; collecting soil samples, measuring physico-chemical properties ofthe soil samples, tracking biological properties of the soil samples, and screening the pasture varieties or variety combinations; performing grazing tests on the screened-out varieties or variety combinations, tracking biological properties of the varieties or variety combinations, and measuring soil physico-chemical properties, digestibility of livestock and intestinal track and excrement management greenhouse gas emission; tracking economic input and output of the whole process, and calculating economic benefit of the whole production system. The grassland ecosystem based new germplasm resource and new variety evaluation method has the advantages that a single evaluation standard with the objective of simple yield or nutritional quality is upgraded into a multiple evaluation method withthe visual angle of the whole biological system, and ecological benefit is taken into consideration while maximum economic benefit is pursued; four aspects, land-pasture-livestock-economy, of the newgermplasm resources and the new varieties of the pastures are evaluated and identified, and scientific and reliable evaluation results are provided.

Description

technical field [0001] The invention belongs to the technical field of plant varieties, and in particular relates to a new forage grass germplasm resource and a new variety evaluation method based on the grassland ecosystem. Background technique [0002] The comprehensive evaluation of new forage germplasm resources and new varieties (lines) is to screen the collected germplasm resources for breeding and promotion, and to adapt the comprehensive traits such as stress resistance and high yield of newly introduced or newly cultivated varieties (lines). Identification and evaluation, to provide accurate and reliable scientific basis for new germplasm resources and new varieties (lines) in trial promotion areas. At present, the evaluation of new forage germplasm resources and new varieties (lines) is mostly aimed at their agronomic traits, mainly yield and nutritional quality, and some are selected for high grazing tolerance through livestock feeding at a certain stage of breedi...

AI Technical Summary

Problems solved by technology

Then, the evaluation of forage germplasm resources and varieties (lines) cannot be simply measured by yield or nutritional quality.

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