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Leaves scattered; petiole 3–5 mm, densely spreading rust-colored setose; leaf blade elliptic-ovate, ovate, or oblong-lanceolate, 8–16 × 4–9 cm, papery-leathery, abaxially very densely rust-colored setulose, especially on veins, adaxially bullate, densely shortly setulose, immediately glabrescent, secondary veins 2 pairs arising from base, fine veins distinctly raised abaxially, impressed adaxially, base shallowly cordate to rounded, margin slightly revolute, sparsely dentate,± setiform-ciliate, apex acuminate, caudate, or acute. Inflorescences axillary, racemose or corymbose, 1–4 cm, ca. 10-flowered, densely tomentulose; bracts rhombic-triangular, 5–8 × 4–5 mm, leathery, densely tomentulose.

叶星散 叶柄3-5毫米,密被平展锈色具刚毛;叶片椭圆状卵形,卵形,或者长圆状披针形, 8-16 * 4-9 厘米,纸质革质,背面非常浓密锈色具小刚毛,在脉上的特别是,正面具泡状隆起,具小刚毛的密被短的,立即后脱落,次脉2 对生于基部,清楚的细脉背面突起,正面凹陷,基部浅心形到圆形,花序腋生,总状或伞房状,1-4厘米,约10花,密被被微绒毛;苞片菱形三角形, 5-8 * 4-5 毫米,革质,密被被微绒毛。

In previous study,the ability of plant resist-drought almost focuses on plant foot,corm and leaf,except seed, especially,large number kinds of plant species is not report.

以往的植物抗旱性研究,多集中在植物成株后的根、茎、叶组织等方面,而对种子的抗旱性研究较少,特别是对批量旱生植物种子,在各种水分条件下的响应方式的研究未见报道。

IT IS HIGHLY EFFECTIVE ON DEEP-ROOT WEEDS, ANNUAL AND BIENNIAL GRAMINACEOUS WEEDS AND CAN BE APPLIED FOR CORN, COTTON, SOIL BEAN, SUGARCANE, RUBBLE, AND FRUIT GARDEN, BESIDES IT ALSO CAN BE USED WIDELY FOR NON-PLANT FIELD SUCH AS RAILWAY, ROAD,AIRPORT,RIVER BANK AND SO ON.

草甘膦为内吸传导型广谱灭生性除草剂,由茎、叶吸收,是非选择性、短残效的芽后除草剂,对多年生深根杂草、一年生和二年生的禾本科杂草非常有效,可用于玉米、棉花、大豆、甘蔗、橡胶、果园中,还可广泛用于河塘堤坝、机场、铁路、公路沿线等非耕地除草。

The muskmelon vigorously grew at potassium level of 240 mg/L in nutrient solution, which was beneficial to macroelement absorption. However, no significant difference in leaves area and fruit weight were recorded among the three treatments.

试验结果表明:营养液中240 mg/L的钾素水平可增强网纹甜瓜植株的生长势,促进茎杆粗壮,有利于矿质元素吸收,但对叶面积无显著影响。

Shade on the flower bolting stage can obvious improved the SPAD value in leaf and appreciatory value. The shading degree was higher, the soluble sugar and starch content in leaf was lower. But the flower formation was not affected because it may still higher than critical value.

3在花茎抽生期,对大百合进行遮荫处理能提高植株株型的观赏价值,遮荫程度越高,其叶片的SPAD值越高,叶片数越多和叶面积越大,同时株高表现也尤为显著。

Leaves simple; petiole 5-15 mm; leaf blade adaxially dark green and nitid, obovate, 6-11 × 3-7 cm, papery, abaxially sparsely pubescent, crinite in axils of lateral veins, adaxially sometimes pubescent on midvein, lateral veins 8-15 pairs, straight or not, branched far away from margin, terminal veins running into teeth, attenuate from middle to base, upper margin undulate-serrulate, apex rounded or subtruncate, tip shortly acute. Panicle terminal, 9-30 × 10-20 cm, 4 × branched, pubescent.

单叶 叶柄5-15毫米;叶片正面深绿色和有光泽,倒卵形, 6-11 * 3-7 厘米,纸质,背面稀疏短柔毛,具长软毛的在侧脉腋处,在中脉上正面有时短柔毛,侧脉8-15 对,直与否,远离边缘的分枝,圆锥花序顶生, 9-30 * 10-20 厘米,4回分枝,短柔毛。

Leaves basal, distichous; petiole well developed, base sheathing; leaf blade lanceolate or oblong, with several pairs of longitudinal veins parallel to a distinct midvein.

茎非常短。叶基生,二列;叶柄明显,基部具鞘;叶片披针形或者长圆形,有几对平行的纵裂或一个显著的中脉。

One-year-old seedlings of five native species including Dolichandrone cauda-felina, Syzygium jambos, Melastoma candidum, Pterospermum heterophyllu, and Schefflera octophylla were planted in pot containers and acclimated under partially shaded regime for 4 weeks. And further, seedlings of each species were divided into two groups with equivalent individuals for each group, which were exposed to the clean and the polluted site, respectively. After five months, dimensional growth parameters and dry mass allocation were measured and analysed to study the differences in response of these subtropical woody species to atmospheric pollution.

将乡土木本植物猫尾木Dolichandrone cauda-felina蒲桃Syzygium jambos、野牡丹Melastoma candidum、翻白叶树Pterospermum heterophyllum以及鸭脚木Schefflera ctophylla 1年生袋装苗盆栽,置半庇荫环境下适应4周,之后按株数均等分成两组,分别放置在南海五星污染区和广州华南植物园清洁区进行试验。5个月后进行植物构形生长参数和干物质量的测定,以探讨这5种亚热带树苗对大气污染响应的差异。

Stems herbaceous. Foliage leaves solitary or paired on each growth module, usually long petiolate, often cordate or sagittate, margin entire.

茎草质。营养叶单生或成对在每生长单元,具叶柄的通常长,通常上心形的或箭头形,边缘全缘。

Leaves sublinear to narrowly lanceolate, subentire to obscurely denticulate; stolons with fleshy terminal turions; fruiting pedicels 1-5 cm; seed comas dingy white.

叶近线形到狭披针形,对具不明显小齿近全缘;匍匐茎具肉质的顶生的具鳞根出条;果梗1-5厘米;种子种缨昏暗白色。

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