panache 发表于 2025-3-21 16:07:04

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影响带来 发表于 2025-3-21 21:48:03

Measuring availability of nutrients and toxic ionsIt was taken for granted earlier (Chapter 1) that the soil-plant-air continuum is a study unit of value in discussing transfers of water, minerals and energy. It is now worth focusing on the first part of the continuum in the light of the processes of soil formation, but with a view to understanding nutrient flow to plants and ecosystems.

animated 发表于 2025-3-22 03:03:48

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配偶 发表于 2025-3-22 07:23:26

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Neutropenia 发表于 2025-3-22 10:48:00

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constitute 发表于 2025-3-22 16:25:21

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indignant 发表于 2025-3-22 19:40:32

Herbivores, decomposers and other soil organismsen considering the movement of ions in the soil-plant system, however, there are features in common which are usefully discussed together. They may be linked by a simple food web as shown in Figure 5.1

时代 发表于 2025-3-22 22:34:37

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去掉 发表于 2025-3-23 04:53:28

The autecology of two contrasting speciesies, unless carried out in a rigorously comparative frame of reference, may not repay the effort expended. In these two cases the species selected are representative of wider themes, and each study ought to stimulate further work.

几何学家 发表于 2025-3-23 08:22:55

Restoration of derelict landed ecological studies. Almost all fields of ecology have an applied aspect, something that needs emphasis in today’s world. This particular topic also serves to introduce new subject matter and is in itself a stimulating field (Bradshaw and Chadwick 1980).
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查看完整版本: Titlebook: Soil~Plant Relationships; An Ecological Approa David W. Jeffrey Book 1987 David W. Jeffrey 1987 atmosphere.biology.ecology.ecosystem.forest