Zucchini: annual creeping herb; Stems with furrows, short bristles and translucent coarse hairs. Petiole stout, short setose, 6-9 cm long; The leaves are hard, erect, triangular or ovate-triangular, sharp at the apex, with irregular sharp teeth at the edge, heart-shaped at the base, with a semicircular bend, a depth of 0.5- 1 cm and a width of 3-4 cm. The upper part is dark green, the lower part is light in color, the veins are slightly raised on the back, and both sides are rough.
The fruit stalk is stout, with obvious furrows, and the fruit pedicle becomes thicker or slightly enlarged, but it is not trumpet-shaped. The shape of fruit varies with varieties; Seeds are numerous, oval, white, about 20 mm long, and the edges are arched and obtuse.
Gourd: annual climbing herb; The stems and branches are furrowed, and are mucilaginous villous, and gradually fall off when they are old, becoming nearly hairless.
The fruit is green at first, then turns white to yellowish. Due to long-term cultivation, the shape of the fruit varies greatly, depending on different varieties or varieties. Some of them are dumbbell-shaped, with a narrow middle, and the lower and upper parts are swollen. The upper part is larger than the lower part, and it is several tens of centimeters long. Some of them are only 10 cm long (small gourd), and some of them are oblate, rod-shaped or structured. When ripe, the skin becomes woody.
The seeds are white, obovate or triangular, the top is truncated or 2-toothed, sparse and round, about 20 mm long. Flowering in summer and fruiting in autumn.
Second, the growth environment
Zucchini: The optimum temperature for the growth period is 20-25℃, and the growth is slow below 15℃, and stops below 8℃. It grows slowly above 30℃ and is prone to diseases. The suitable temperature for seed germination is 25-30℃, and 13℃ can germinate, but it is very slow; Germination at 30-35℃ is the fastest, but it is easy to cause excessive growth.
The flowering and fruiting period needs higher temperature, and generally it is best to keep 22-25℃. The lowest temperature for root growth is 6℃, and the lowest temperature for root hair generation is 12℃. The fertilized fruit can develop normally at night temperature of 8- 10℃.
Gourd: Pingchuan and low-lying land with good drainage and fertile soil and hilly land with irrigation conditions. Avoid watermelons and other melons.
Third, the distribution range
Zucchini: Zucchini is native to the south of North America. It was introduced from Europe in China in the middle of19th century, and it is distributed all over the world, especially in Europe and America. It is cultivated all over China.
Gourd: Cultivated all over China. It is also widely cultivated in tropical to temperate regions of the world.
Fourth, the main value
Zucchini: Zucchini contains more vitamin C, glucose and other nutrients, especially calcium. The contents of nutrients per 100g edible part (fresh weight) of different varieties are as follows: protein 0.6-0.9g, fat 0. 1-0.2g, cellulose 0.8-0.9g, sugar 2.5-3.3g, carotene 20-40g, vitamin C 2.5-9mg and calcium 22.
Cucurbita pepo: Every100g of cucurbita pepo contains the following nutrients: calories (15.00kcal), protein (0.70g), fat (0 0. 10/0g), carbohydrates (3.50g), dietary fiber (0.80g) and vitamin A.
Nicotinic acid (0.40mg), vitamin C (11.00mg), calcium (16.00mg), phosphorus (15.00mg), potassium (87.00mg) and sodium (0.60mg).
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