Acknowledge I expresses thanks to Assoc. Prof. rob Reid of Adelaide university of Australia, Dr Jeff Gale, foreign teacher of northwest A&F University of China, and Prof. Zhang Fusuo, Prof. Li Xiaolin of China Agriculture University, Prof Liu Yuanyin of Northeast agriculture Unversity and other authors who provide materials for me, or whose materials, such as photographs and figures etc, I used in the lectures

第一节复(混)合肥料的概念 第二节复(混)合肥料的成分、性质与施用 第三节复(混)肥料的合理施用

第一节有机肥料的营养作用 第二节有机肥料在农业生产中的作用 第三节有机肥料的种类、性质和施用 第四节有机肥料的特点与合理施用

Class Test 3 Translate the following terms （1) Homogeneous and homozygous Cultivars同质纯合型品种 （2) Homogeneous and heterozygous Cultivars同质杂合型品种 （3) Heterogeneous and homozygous Cultivars异质纯合型品种 （4) Heterogeneous and heterozygous Cultivars异质杂合型品种

The short distance transports of nutrients There are two main steps nutrients translocation in plant after nutrients absorbed by the root. One is the centripetal transport from the rhizoplane through the cortex tissue of the roots towards the xylem vessels of the central cylinder. Another one is the vertical transport from from the root towards the leaves

草本,稀为木质藤本。汁液乳状,水状或有辛辣味,常具草 酸钙结晶。有根状茎或块茎 叶基出或茎生,单叶或复叶,叶形和叶脉不一,基部常具膜 质鞘

多年生草本,陆生、附生或腐生,稀为攀援藤本。 陆生及腐生的常具根状茎或块茎,有须根。附生的具有 肥厚根被的气生根。 ·茎直立,悬垂或攀援,往往在基部或全部膨大为具1节或 多节、呈种种形状的假鳞茎

草本或木本,有或无地下茎,地上茎特称为秆。秆有显著的节和节间,节间多中空,很少实心(如玉米等) 单叶互生,2列,每叶分叶鞘、叶片和叶舌3部分;

草本,灌木或乔木,常有刺及明显的皮孔。 叶互生,稀对生,单叶或复叶,托叶常附生于叶柄上 而成对。 花两性,辐射对称,花托凸隆或凹陷, 花被与雄蕊常愈合成1碟状、钟状杯状、坛状或圆筒 状的花筒( floral tube或 hypanthium),此花筒常被 称为萼筒或花托筒,花萼、花冠和雄蕊看起来从花筒

Concept of organic fertilizers Organic fertilizers-that are derived from the wastes and residues of plants or animals. Such as manure, sewage sludge etc. Some consist of unprocessed plant materials(such as tree leaves, grass clipping, crop residues, and green manure crops)