紫花苜蓿的基本介绍

紫花苜蓿(学名:Medicago sativa. )豆科、苜蓿属多年生草本, 根粗壮,深入土层,根颈发达。原产于小亚细亚、伊朗、外高加索等一带。多生于田边、路旁、草原以及河岸等地。目前世界各地都有栽培或呈半野生状态。

形态特征

多年生草本,高30-100厘米。根粗壮,深入土层,根颈发达。茎直立、丛生以至平卧,四棱形,无毛或微被柔毛,枝叶茂盛。羽状三出复叶;托叶大,卵状披针形,先端锐尖,基部全缘或具1-2齿裂,脉纹清晰;叶柄比小叶短;

花序总状或头状,长1-2.5厘米,具花5-30朵;总花梗挺直,比叶长;苞片线状锥形,比花梗长或等长;花长6-12毫米;花梗短,长约2毫米;萼钟形,长3-5毫米,萼齿线状锥形,比萼筒长,被贴伏柔毛;花冠各色:淡黄、深蓝至暗紫色,花瓣均具长瓣柄,旗瓣长圆形,先端微凹,明显较翼瓣和龙骨瓣长,翼瓣较龙骨瓣稍长;子房线形,具柔毛,花柱短阔,上端细尖,柱头点状,胚珠多数。

荚果螺旋状紧卷2-4 (-6) 圈,中央无孔或近无孔,径5-9毫米,被柔毛或渐脱落,脉纹细,不清晰,熟时棕色;有种子10-20粒。种子卵形,长1-2.5毫米,平滑,黄色或棕色。花期5-7月,果期6-8月。

生长环境及分布

紫花苜蓿富含优质膳食纤维、食用蛋白、多种维生素(包括维生素B、 维生素C、 维生素E等)、多种有益的矿物质以及皂苷、黄酮类、类胡萝卜素、酚醛酸等生物活性成分。

全国各地都有栽培或呈半野生状态。生于田边、路旁、旷野、草原、河岸及沟谷等地。欧亚大陆和世界各国广泛种植为饲料与牧草。

繁殖方式

紫花苜蓿多采用播种繁殖方式。

1、播种时间

分为春播、秋播。温泉县春播一般在3月下旬歹5月初,地温稳定在5℃以上即可播种。秋播一般在8月底9月初,使苜蓿在冬季来临前有60天左右的生长时间。秋季播种后土壤墒情好,杂草危害轻,出苗率和成活率较高,是比较理想的播种时间。

2、 播种方式方法

播种方式:可单播,也可套播(一般在小麦浇两遍水后立即套播),也可混播(与其他禾草品种混播)。

播种方法:

一是人工撒播,撒播是常用的一种简便播种方法,多用于小块地、草地补播、水土保持的坡地上,在作物间套种苜蓿时也用撒播。人工撒播时加细沙进行,种子与细沙比例1:6—8,先灌水后撒播,一般将种子撒在地面后,用钉耙或树枝在地面上搂一遍,起到浅覆土的作用,在雨水多的条件下出苗良好。撒播的缺点是深浅不一致,撒种不均匀,出苗不整齐,而且无行距,难以进行中耕锄草等管理;

二是机械播种适合大面积播种,便于后期田间管理,而且播种质量好、产量高、效益好。

主要价值

欧亚大陆和世界各国广泛种植为饲料与牧草。紫花苜蓿茎叶柔嫩鲜美,不论青饲、青贮、调制青干草、加工草粉、用于配合饲料或混合饲料,各类畜禽都最喜食,也是养猪及养禽业首选青饲料。

紫花苜蓿含有5种维生素B、维生素C、维生素E、10种矿物质及类黄酮素、类胡萝卜素、酚型酸三种植物特有的营养素,其主要作用如下:

1. 类黄酮素:具有抗氧化作用,同时可防止胆固醇在动脉上的沉积,且避免血液凝结成块,以减少动脉硬化发生的机率。类黄酮素也可以阻断某些荷尔蒙的不良活动,抑制引起发炎的酵素活动,还可以抑制微血管增生。

2. 酚型酸:具有抗氧化作用,可视为一种抗氧化物质,可防止血液凝结成板块,使血液在血管畅通无阻,而降低心脏血管疾病的发生。

3. 类胡萝卜素:可保护眼睛,预防眼神经的退化性疾病。在人体中,可使细胞成熟分化,在疾病的预防上,已证实对防止癌症再发及防止心脏病的发生有一定的功效。临床上已开始用某些类胡萝卜素,在癌症的病人身上,进行附加的预防性化疗。

紫花苜蓿在欧亚大陆及世界各地种植广泛,并被作为饲料和牧草生产。经长期研究发现苜蓿还有一定的要药用价值。
添加时间:2018年03月02日 更新时间:2018年03月02日
紫花苜蓿(学名:Medicago sativa)又叫做紫花牧蓿、苜蓿、路蒸等,属豆科植物。凭借高产量和优良草质,成为当今世界分布最广品质最优良的牧草之一。下面我们一起来了解下紫花苜蓿的栽培技术。
添加时间:2018年03月01日 更新时间:2018年03月01日

紫花苜蓿的资料

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添加时间:2018年03月01日 更新时间:2018年03月01日

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