Another name

Foreign spicy, big spicy, white flowers

morphological character

Perennial herb, 30- 150 cm high, light gray-green or light green throughout the plant. The root system is straight, and the buried depth is 30- 1 10 cm, mainly concentrated in the soil layer of 20-30 cm.

Stems erect, branched at upper part, glabrous or sparsely pilose. Basal leaves and lower leaves are rectangular or oval, 4-13cm long and 2-5cm wide, with blunt tips, tapering bases, rough serrated edges, sessile middle leaves, oblong lanceolate or ovate lanceolate, and blunt or sharp tips; The upper leaves are sessile and narrow. Hairless, petiole 2-6 cm long, raceme terminal, scattered, conical; The flowers are small, white and about 1mm in diameter. Short pods broadly ovoid or suborbicular, long1.5-3mm, glabrous; The seeds are oval and light brown (figure 103).

Figure 103 Lepidium latifolium

Lepidium latifolium

geographical distribution

In China, it is distributed in Northeast China, North China, Northwest China and Tibet. Nepal, India, Pakistan, Afghanistan, Mongolia and Russia also have it.

Biological and ecological characteristics

It likes a mild climate with little rain, is not resistant to stagnant water, and is most suitable for growing in areas with annual rainfall of 350-700 mm and relative humidity of 48-78%. Distributed in Bohai Sea, Inner Mongolia and the northeast coast. It grows in a small environment, on well-drained banks, ridges and mounds. Grow sturdily in a small area of saline-alkali land, and the plant height can reach more than1m. Most of them are pure communities. Roots and buds have strong resistance to low humidity, and can safely overwinter in the environment of-65438 05℃ in northern Shandong and germinate at 5-8℃. The optimum growth temperature is 19-23℃. The growth period is120-127 days (table103-1). The green grass period is long, the flowers are big, the seeds are not mature well, and the main line is asexual reproduction.

Table103 ——1growth period of Lepidium latifolia (day/month)

The communities composed of plants such as Lepidium latifolia are slightly different in coastal and inland areas.

The associated species of coastal saline soil or saline-alkali land are Nitraria tangutorum, Chenopodium album, Kochia scoparia, Suaeda salsa and Leonurus japonicus. China people. The associated species of inland saline-alkali land are Polygonum aviculare, Kochia scoparia, Suaeda salsa, Atriplex atriplex, Chenopodium glaucum and so on.

Feeding value

Broad-leaved Polygonatum odoratum vegetables have a medium taste, which is eaten by pigs and sheep, but not by large domestic animals such as mules, horses and donkeys. It is a tall forage plant in coastal saline-alkali land. Cutting and grazing at flowering or early stage. The output is 80- 100 kg/ha. Thick leaves, less fiber, and fresh stems and leaves are preferred by pigs, which can replace some components in pig compound feed. The stem and leaf are relatively high (table 103-2).

Table 103-2 Proportion of stems and leaves of Lepidium latifolia (%)

Lepidium latifolia is mainly used in the tender stage, and the dry matter digestibility reaches 75% at flowering stage. After flowering, with the increase of mature cellulose, the edibility decreases, and its chemical composition is shown in table 103-3.

Table 103-3 chemical constituents of Lepidium latifolia (%)

Key points of cultivation

Experiments show that sowing on the surface can increase the density and coverage of grass and improve saline-alkali land. It can be ploughed before sowing or sown after harrowing. Generally, the soil moisture is moist, the seedlings emerge quickly and the seedling survival rate is high.

Other uses

Seeds can be used as medicine. Diuretic, expectorant and antiasthmatic, and can be used for treating phlegm and asthma, edema, etc.