地名表
发表于 2025-3-30 09:18:57
https://doi.org/10.1007/978-3-7091-9863-6y adoption were the welfare of the farmer family, the age of the farm manager, and the contribution of walnut production to the family income. Dual purpose management schemes were characterised by extended investment return delays, but proved to be the most rewarding schemes when practised with inte
indemnify
发表于 2025-3-30 14:55:38
Zusammenfassung der Ergebnisse,nes (southern France). The outputs of the model, related to labour requirements, stock number dynamics and landscape diversity are discussed in relation to farmer’s perception of the role of trees in the farm operation, and the indirect economic benefits sought.
scoliosis
发表于 2025-3-30 18:30:15
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越自我
发表于 2025-3-31 00:36:04
https://doi.org/10.1007/978-94-017-0679-7Forestry; Plantation; environment; forest; nutrient cycling
allergen
发表于 2025-3-31 01:53:06
978-90-481-5258-2Springer Science+Business Media Dordrecht 1999
Abrade
发表于 2025-3-31 06:44:08
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Aspiration
发表于 2025-3-31 12:39:12
https://doi.org/10.1007/978-3-476-05198-1 managed biophysical controls and farming system controls with realistic labour input and management regimes. Trying to draw biophysical conclusions from farming system controls (or the reverse) is often not justifiable. The design and management of these elusive control plots is a complicated issue
难理解
发表于 2025-3-31 13:42:15
https://doi.org/10.1007/978-3-642-99760-0tation and runoff, and output through harvest and leaching were measured for N, P, K, Ca and Mg using adsorption resins, tensiometry and suction cups. Various management scenarios are discussed with respect to nutrient return. Nutrient input with rainfall was generally low in comparison to nutrient
围裙
发表于 2025-3-31 18:45:44
https://doi.org/10.1007/978-3-642-99760-0o spontaneous weeds as a control in two Mediterranean sites (Castries and Notre-Dame de Londres) near Montpellier (France). Tree growth, soil water depletion and nitrogen content of the tree leaves were monitored to assess the impact of both water competition and possible facilitation resulting from
结合
发表于 2025-4-1 00:22:00
https://doi.org/10.1007/978-3-322-84114-8 the crop rooting zone. They may also compete less strongly for nutrients than trees which root mainly within the same zone as crops. To test these hypotheses we placed highly enriched .N-labelled ammonium sulphate at three depths in the soil between mixed hedgerows of the shallow-rooting . and the