一年生的

The effective ingredient of cannabis sativa is tetrahydrocannabinol.

大麻一年生草本植物，其有效成分是四氢大麻酚，这是最主要的致幻物质

Herbs annual, biennial, or perennial with a caudex.

一年生草本，两年一次的事，或多年生植物具一。

Herbs annual, biennial, or perennial with woody caudex.

一年生草本，两年一次的事，或多年生植物具木质。

The managing technique of weed control in the utilized first field was established by using Pendimethalin combiningwith shallow intertilling and raining after germinating, artificial control for weeds that still survive and germinate was carried on once or twice, and other perennial weeds and Convolvulus arvensis were sprayed Butoxone along the alfalfa line.

利用一年种子田综合防除措施为：在苜蓿返青后，喷施土壤处理剂施田补，并在一周内浅中耕混土以防治一年生杂草，对仍存活杂草和后期出现的杂草进行人工除草一至二次；在苜蓿后期和收割后，可沿苜蓿行间喷洒2，4-D丁酯，以杀除田旋花及其他阔叶多年生杂草。

For this reason, we have established a maximum field size of 20 to 40 ha for annual crops, cording to erosion risk.

因此， 我们已经建立 20 到 40 公顷一年生农作物的混合农田。

In this article,one-year old Dianthus plumarius was used as materials to study systematically its physiological and ecological properties of photosynthesis、drought resistance and shade resistance in natural environment.

本研究以一年生地被石竹的播种苗为供试材料，系统研究其在自然生态环境条件下光合生理特性、抗旱性和耐阴性，结果表明： 1。

It is an annual with ovate stipules and a glabrous filament tube.

它是一年生草本，具卵形托叶和无毛的花丝筒部。

European annual with pale rose-colored flowers; cultivated flower or self-sown grainfield weed; introduced in North America; sometimes classified as a soapwort.

开有浅玫瑰红花朵的一年生欧洲植物；谷地里自我受精或人工栽培；原产北美；有时归皂荚属。

Vegetation ecotype tend to be xerophyte and even hyper-xerophyte and finally replaced by annual plant. Community structure and species diversity also decrease as the ecological environment worsen, In this process, the height, coverage and biomass decreases by 56.6%、 80.8% and 74.2% respectively compared to steppe, and the indices of species richness, diversity and evenness decrease by 76.4%、 56.7% and 32.0%, but β diversity indices increase by 14.6 times, especially the decease of species gregariousness and the breadth and overlay of species Niche shows that grassland tend to be more sandy and vegetation retrogression succession take place.

其中，植被生态型逐渐由中旱生向旱生、超旱生过渡，并最终被一年生植被替代；群落结构及多样性呈明显递减规律，到严重沙化阶段，草群高度、盖度、生物量与典型草原相比，下降幅度分别达到56.6%、80.8%和74.2%；物种丰富度、多样性及均匀性分别降低76.4%、56.7%和32.0%；而群落β多样性增长14.6倍，特别是多年生物种群聚度降低和生态位宽度、生态位重叠值的下降，表明草地沙化，植被发生逆行演替。

The kind of plant is a hardy annual.

这种植物是耐寒的一年生植物。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失