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Effects of water and phosphorus regulation on photosynthesis and yield of alfalfa in the Yinda Irrigation District
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Effects of water and phosphorus regulation on photosynthesis and yield of alfalfa in the Yinda Irrigation District
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Journal Article
Effects of water and phosphorus regulation on photosynthesis and yield of alfalfa in the Yinda Irrigation District
2025
Overview
【Objective】 Improving water and nutrient use efficiency is essential for promoting sustainable agriculture. This study investigates the combined effects of water and phosphorus applications on growth, photosynthetic characteristics, and yield of alfalfa. 【Method】The experiment was conducted in the Yinda Irrigation District of Gansu Province using the variety Jieyi alfalfa as the model plant. The experiment consisted of three water treatments with soil moisture content kept at 45%-60% (low, W1), 60%-75% (medium, W2), and 75%-90% (high, W3) of the field capacity. For each soil moisture treatment, there were three phosphorus treatments by applying 0 (low, P0), 50 kg/hm2 (medium, P1) and 100 kg/hm2 (high, P2) of phosphorus fertilizer. In each treatment, we measured plant traits, photosynthesis, and hay yield. 【Result】① Under low and medium soil moisture conditions, plant height, stem diameter, leaf-to-stem ratio, photosynthetic performance, and irrigation water use efficiency all increased with phosphorus applica
Publisher
Science Press
