愉快吗 发表于 2025-3-25 05:55:45

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愤慨一下 发表于 2025-3-25 09:57:34

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chastise 发表于 2025-3-25 12:11:24

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Blood-Clot 发表于 2025-3-25 17:45:07

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EVADE 发表于 2025-3-25 20:52:54

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持续 发表于 2025-3-26 00:28:25

Andrew J. I. Jones,Marek Sergotbution, often means the difference between adequate or scarce food supplies in subsistence agriculture. Individuals, who depend entirely on what they produce for survival, completely understand the implications of rainfall variability. Even though they may not be able to express the meaning of these

indignant 发表于 2025-3-26 07:50:22

Andrew J. I. Jones,Marek Sergotrs, 1983). These words by the former chief of the U.S. Department of Agriculture’s (USDA’s) Soil Conservation Service corroborate the attitude of many persons regarding the potentials of this practice for conserving soil and water resources, not only in the United States, but also in many other coun

RODE 发表于 2025-3-26 10:36:55

Associating metrics to certification pathssoil organic matter (SOM) in most semiarid dryland soils is relatively low, ranging from 0.5 to 3% and typically less than 1%, its influence on soil properties is of major significance. Even at low concentrations organic matter is the major substance facilitating soil aggregation and structural stab

运动性 发表于 2025-3-26 15:54:57

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多嘴多舌 发表于 2025-3-26 16:47:35

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查看完整版本: Titlebook: Advances in Soil Science; Dryland Agriculture: R. P. Singh,J. F. Parr,B. A. Stewart Book 1990 Springer-Verlag New York Inc. 1990 Infiltrati