標(biāo)題: Titlebook: Methods of Studying Root Systems; Wolfgang B?hm Book 1979 Springer-Verlag Berlin · Heidelberg 1979 Excavation.Wurzel.development.ecology.g [打印本頁] 作者: Grant 時間: 2025-3-21 20:04
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書目名稱Methods of Studying Root Systems被引頻次
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書目名稱Methods of Studying Root Systems讀者反饋
書目名稱Methods of Studying Root Systems讀者反饋學(xué)科排名
作者: Amendment 時間: 2025-3-21 21:56
Other Methods, sash cord or a leather strap is placed around the base of the stalk and by a hand-powered winch the force necessary to pull the stalk out of the soil with the main part of the roots is measured by a tensiometer.作者: 變量 時間: 2025-3-22 03:39 作者: yohimbine 時間: 2025-3-22 05:16 作者: Mast-Cell 時間: 2025-3-22 09:28 作者: 極力證明 時間: 2025-3-22 14:58 作者: anarchist 時間: 2025-3-22 18:07 作者: Asymptomatic 時間: 2025-3-22 23:42
Wolfgang B?hme but de décider si ce qui est dans le corpus peut lui être attribué avec certitude, et si oui combien de textes.. L’importance historique de ce médecin, emblème de la médecine, est faite d’éléments assez vérifiables et de comptes-rendus semi-légendaires qui au cours du temps ont favorisé l’agglomér作者: 蜿蜒而流 時間: 2025-3-23 04:52 作者: 提名 時間: 2025-3-23 07:26 作者: 輕信 時間: 2025-3-23 12:04 作者: 讓步 時間: 2025-3-23 15:18 作者: 單純 時間: 2025-3-23 21:27
bestimmten Z?hnezahlen zur Verfügung stehen. Wie aus den nachstehend angeführten Beispielen zu ersehen ist, ergeben sich beim N?herungswertrechnen vielfach gr??ere Primzahlenl, besonders darin, wenn hohe Genauigkeit erreicht werden soll. Um nun den Rechnungsgang abzukürzen, empfiehlt es sich, für M作者: 輕彈 時間: 2025-3-23 22:50
Book 1979for studying root physiology are not covered in this book. Scientific publications on roots are scattered in many different journals published all over the world. By working through the international root literature I found that about ten thousand papers on root ecology have been published at the pr作者: 類似思想 時間: 2025-3-24 02:45 作者: 煉油廠 時間: 2025-3-24 06:42 作者: Indebted 時間: 2025-3-24 13:17
General Survey of Root-Study Methods,tivated crops and determined their morphology, as well as their weight and length. Du Hamel Du Monceau (1764/65) excavated tree root systems. Then for over one hundred years no important root research was documented.作者: 倒轉(zhuǎn) 時間: 2025-3-24 17:37 作者: 細(xì)菌等 時間: 2025-3-24 20:34 作者: 可以任性 時間: 2025-3-25 02:37
Auger Methods,d augers or by mechanical sampling machines, and separating the roots from the soil by washing. Except for special purposes no attempt is made to keep the roots in their natural positions. The size of the samples generally is smaller than those from the monolith methods.作者: 尖牙 時間: 2025-3-25 05:16
Indirect Methods,lopment of indirect study methods. They are based on the principle of determining changes in water or nutrients in different soil layers between successive sampling occasions and from these changes inferring information on the root distribution in a soil profile.作者: Cholesterol 時間: 2025-3-25 11:25 作者: 咯咯笑 時間: 2025-3-25 14:16
Container Methods,tems. The container approach allows the researchers to isolate individual environmental factors which have interacting influence on root growth in natural soil profiles. By utilizing different combinations of environmental factors a great deal of basic information can be obtained regarding the signi作者: 虛度 時間: 2025-3-25 16:47
Root Parameters and Their Measurement,s. The manner in which the root data is best expressed should be considered before starting an experiment. In some methods, e.g., by the use of the profile wall methods, there is little choice, but in many other study methods several approaches can be used.作者: Affirm 時間: 2025-3-25 23:05 作者: miracle 時間: 2025-3-26 03:47
tstabellen.Includes supplementary material: Marktforschung und Informationen über wirtschaftliche Tatbest?nde sind für Unternehmen (über-)lebenswichtig. So ist das Wissen über Konkurrenten und M?rkte Vorbedingung jeder strategischen Planung. Dieses Handbuch ist eine unverzichtbare Hilfe für eine pro作者: gentle 時間: 2025-3-26 05:24 作者: Invigorate 時間: 2025-3-26 08:39 作者: 搖晃 時間: 2025-3-26 16:02
Wolfgang B?hmcle avant J.-C., a trouvé avec le . son recueil et l’outil de sa transmission dans le temps et dans l’espace. Toutefois, le cadre offert par le corpus, complexe et apparemment unitaire par l’exactitude de la thématique médicale traitée, impose aux lettrés de difficiles problèmes de chronologie et d’作者: strdulate 時間: 2025-3-26 19:50 作者: Regurgitation 時間: 2025-3-26 23:54
Wolfgang B?hmg des Wechselr?derverh?ltnisses nicht durch vorhandene Wechselr?der hergestellt. werden kann. Es müssen in einem derartigen Fall entweder besondere Wechselr?der neu angefertigt oder das Gewinde mit den, im R?dersatz zur Verfügung stehenden, also vorhandenen Wechselr?dern angen?hert geschnitten werde作者: 高歌 時間: 2025-3-27 02:53
g des Wechselr?derverh?ltnisses nicht durch vorhandene Wechselr?der hergestellt. werden kann. Es müssen in einem derartigen Fall entweder besondere Wechselr?der neu angefertigt oder das Gewinde mit den, im R?dersatz zur Verfügung stehenden, also vorhandenen Wechselr?dern angen?hert geschnitten werde作者: 擔(dān)心 時間: 2025-3-27 05:48
https://doi.org/10.1007/978-3-642-67282-8Excavation; Wurzel; development; ecology; growth; physiology; plant; soil; water作者: 膝蓋 時間: 2025-3-27 10:54
Profile Wall Methods,If plant roots are excavated from the soil it is in most cases sufficient to expose only one part of the whole root system. Such partial excavations as the sector methods (Sect. 3.3.4) can be modified by removing only few centimeters of soil from a profile wall and be used to record the exposed roots.作者: aerobic 時間: 2025-3-27 16:28
Glass Wall Methods,Abstract In glass wall methods root growth is observed or recorded through glass windows placed against the soil profile. Sachs (1873) working in boxes with refilled soil was one of the first who used this technique (see Sect. 10.3.3). Root studies in undisturbed soil profiles were made for the first time by McDougall (1916).作者: 放氣 時間: 2025-3-27 18:05
Techniques of Root Washing,Roots can be separated from soil with dry sieving only. At the field sampling site, the soil-root samples are thrown on a sloping wire screen with 2–5 mm mesh size where the roots are collected. Fresh or dry weight or other root parameters are then recorded directly without washing.作者: CLAY 時間: 2025-3-27 22:47 作者: Critical 時間: 2025-3-28 03:59 作者: 不合 時間: 2025-3-28 08:02 作者: 四目在模仿 時間: 2025-3-28 10:24
Auger Methods,d augers or by mechanical sampling machines, and separating the roots from the soil by washing. Except for special purposes no attempt is made to keep the roots in their natural positions. The size of the samples generally is smaller than those from the monolith methods.作者: 相同 時間: 2025-3-28 17:45 作者: dithiolethione 時間: 2025-3-28 22:38 作者: Permanent 時間: 2025-3-29 02:35
Ecological Studieshttp://image.papertrans.cn/m/image/632428.jpg作者: 踉蹌 時間: 2025-3-29 04:27
978-3-642-67284-2Springer-Verlag Berlin · Heidelberg 1979作者: 個阿姨勾引你 時間: 2025-3-29 11:05
Methods of Studying Root Systems978-3-642-67282-8Series ISSN 0070-8356 Series E-ISSN 2196-971X 作者: Misgiving 時間: 2025-3-29 15:22 作者: insomnia 時間: 2025-3-29 18:12 作者: sultry 時間: 2025-3-29 21:06 作者: surrogate 時間: 2025-3-30 03:54 作者: 愛得痛了 時間: 2025-3-30 06:06
https://doi.org/10.1007/978-1-4471-2023-0w how eye tracking can be used on its own and together with other psychophysiological tools in tourism. The chapter also provides an evaluation of the potential, advantages, limitations and drawbacks of eye tracking.作者: incubus 時間: 2025-3-30 12:09 作者: Agronomy 時間: 2025-3-30 13:53
