Seasonal beans are kidney beans, also known as "beans", Dutch beans are the Dutch brought it to China from its origin.

1, the same shape

Beans are thin round, the root system is more developed, but the regeneration capacity is weak. Seedling roots grow faster than the above-ground part, the main root of the adult plant can be as deep as 80cm underground, lateral roots to 60-80cm wide, the main absorption roots are distributed in the surface 15-40cm soil layer.

Holland bean, is flat, annual twining herb, 90-180cm high, the whole plant green, smooth and hairless, was pink frost. Leaves with 4-6 leaflets, stipules larger than the leaflets, leaf-shaped, heart-shaped, lower edge with fine teeth. Leaflets ovoid, 2-5 cm long, 1-2.5 cm wide, entire; stipules leaflike, ovate, base auriculate enclosing petiole.

2, different cultivation soil

Doujiao is most suitable for cultivation in the soil layer deep, loose, humus more well-drained soil. Sandy loam, loam and general clay can grow, should not be cultivated in low wetland good people heavy clay. The appropriate pH is 6-7. It should not be too acidic or too alkaline. Vegetable beans absorb more nitrogen and potassium, and less phosphorus. Also need a certain amount of calcium fertilizer.

The Dutch bean is not strict on soil conditions, all kinds of soil can be cultivated, but strong acidic soil to apply lime. Holland beans are most avoided, at least 4 to 5 years of crop rotation, it is best to mix fertilizer with organic fertilizer into. Generally for flat beds, low dust depression can be used as raised beds. Seeds can be inoculated with rhizobium before sowing.

3, nutritional value of different

Doujiao nutritious, rich in protein, fat, carbohydrates, dietary fiber, vitamin A, radish, thiamin, riboflavin, niacin, vitamin C, vitamin E, calcium, phosphorus, sodium and other ingredients. Kidney beans are the champion of calcium supplementation. Every 100 grams of kidney beans with skin contains up to 349 milligrams of calcium, nearly twice as much as soybeans.

Holland beans contain carbohydrates, protein, fat, carotene, also contains essential amino acids. Every 100g of Dutch beans contain protein 7g, carbohydrates, calories, calcium, iron, thiamin 0.54mg, riboflavin 0.09mg. In addition, the Dutch beans also contain a unique plant lectins, pitchforks and gibberellin A20, these substances to enhance the body's metabolic function has an important role.

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