lumbar-puncture 发表于 2025-3-21 17:55:14

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OTTER 发表于 2025-3-21 22:08:15

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intoxicate 发表于 2025-3-22 01:04:48

Postscript: How We Look at Dark Placesg from traditional pastoral grazing to factory farming using industrially produced feedstuff (Fig.6.1). The different systems are characterized by different levels of intensification and management, and are also accompanied by different consequences for the sustainability of the systems and the environment.

字谜游戏 发表于 2025-3-22 04:54:03

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CALL 发表于 2025-3-22 10:49:31

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值得尊敬 发表于 2025-3-22 12:56:57

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Yourself 发表于 2025-3-22 20:15:52

https://doi.org/10.1057/9780230275218Suppression of the growth of weeds in agroecosystems can be accomplished in numerous ways. The measures used are either intended to give the crop a favourable starting position in the competition with other species or to keep the crop stand free from weeds, as far as possible.

情节剧 发表于 2025-3-22 23:54:01

Introduction,The term “agroecology” is composed of three roots, derived from the Latin . (pertaining to the field), the Greek . (the home or the household), and the Greek . (study).

fledged 发表于 2025-3-23 03:05:53

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抛射物 发表于 2025-3-23 06:19:54

https://doi.org/10.1057/9780230275218ly 150,000–200,000 years ago. Just as two earlier representatives of the genus . (. and the ancestors of the .) had done before, groups of modern humans left their homeland to colonize other continents. This occurred between 50,000 and 70,000 years ago. The reasons for this migration, which only beg
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查看完整版本: Titlebook: Agroecology; Konrad Martin,Joachim Sauerborn Textbook 2013 Springer Science+Business Media Dordrecht 2013 Agriculture.Agroecology.Ecology.