Herbage Yield, Lamb Growth and Foraging Behavior in Agrivoltaic Production System
Herbage Yield, Lamb Growth and Foraging Behavior in Agrivoltaic Production System
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DOI：
10.3389/fsufs.2021.659175
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发表时间：
2021-04-29
影响因子：
4.7
通讯作者：
Ates, Serkan
中科院分区：
文献类型：
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作者：
Andrew, Alyssa C.;Higgins, Chad W.;Ates, Serkan
农业光伏系统旨在使同一地点的太阳能和农业生产互惠互利，以实现土地的双重用途。本研究比较了俄勒冈州太阳能牧场和传统开放式牧场2年来羔羊生长和牧草产量。2019年春季，断奶Polypay羔羊在日光和开放牧场分别以120和119 g头（-1）d（-1）的速度生长（P = 0.90）。日光（1.5 kg ha（-1）d（-1））和开放牧场（1.3 kg ha（-1）d（-1））之间的活重生产具有可比性（P = 0.67）。同样，2020年，日光（89 g头（-1）d（-1）; 4.6 kg ha（-1）d（-1））和开放（92 g头（-1）d（-1）; 5.0 kg ha（-1）d（-1））牧场的羔羊增重和活重产量相当（均P > 0.05）。2019年春季羔羊的日耗水量与早春相似，但开放牧场的羔羊在晚春期比太阳能电池板下放牧的羔羊多消耗0.72 L头（-1）d（-1）（P < 0.01）。2020年春季羔羊的饮水量没有观察到差异（P = 0.42）。在整个时期内，太阳能牧场的牧草产量比开放牧场低38%，这是由于太阳能电池板下完全遮蔽区域的牧草密度低。从我们的放牧研究的结果表明，较低的牧草质量可在太阳能牧场被较高的牧草质量所抵消，导致类似的春季羔羊生产开放牧场。我们的研究结果还表明，在农业生态系统中，在同一块土地上结合放牧和太阳能生产，可以大大提高土地生产力。
Agrivoltaic systems are designed to mutually benefit solar energy and agricultural production in the same location for dual-use of land. This study was conducted to compare lamb growth and pasture production from solar pastures in agrivoltaic systems and traditional open pastures over 2 years in Oregon. Weaned Polypay lambs grew at 120 and 119 g head(-1) d(-1) in solar and open pastures, respectively in spring 2019 (P = 0.90). The liveweight production between solar (1.5 kg ha(-1) d(-1)) and open pastures (1.3 kg ha(-1) d(-1)) were comparable (P = 0.67). Similarly, lamb liveweight gains and liveweight productions were comparable in both solar (89 g head(-1) d(-1); 4.6 kg ha(-1) d(-1)) and open (92 g head(-1) d(-1); 5.0 kg ha(-1) d(-1)) pastures (all P > 0.05) in 2020. The daily water consumption of the lambs in spring 2019 were similar during early spring, but lambs in open pastures consumed 0.72 L head(-1) d(-1) more water than those grazed under solar panels in the late spring period (P < 0.01). No difference was observed in water intake of the lambs in spring 2020 (P = 0.42). Over the entire period, solar pastures produced 38% lower herbage than open pastures due to low pasture density in fully shaded areas under solar panels. The results from our grazing study indicated that lower herbage mass available in solar pastures was offset by higher forage quality, resulting in similar spring lamb production to open pastures. Our findings also suggest that the land productivity could be greatly increased through combining sheep grazing and solar energy production on the same land in agrivoltaics systems.