Pumpkin (scientific name: pumpkin) is an annual creeping herb of Cucurbitaceae and Cucurbitaceae. The stem is wrinkled. Petiole stout, short bristles; The leaves are hard, erect, triangular, curved, semicircular, dark green at the top, light at the bottom, and rough veins on both sides. Tendrils are slightly stout. Monoecious. Male flowers are solitary; Pedicel stout, angular, short yellow-brown bristles; Calyx lobes linearly lanceolate; Corolla yellow, pointed; Staminal filaments are 65438 0.5 mm long, and anthers are close together. Female flowers are solitary, and the ovary is ovate. The fruit stalk is stout, with obvious furrows, and the fruit stalk becomes thicker or slightly enlarged. The shape of fruit varies from variety to variety; The seeds are oval, white, about 20 mm long, and the edges are arched and obtuse.
Originated in the south of North America, China was introduced and cultivated from Europe in the middle of19th century, and distributed all over the world. Zucchini is rich in vitamin C, glucose and other nutrients, and has the effects of relieving vexation and thirst, moistening lung and relieving cough, clearing away heat and diuresis, and relieving swelling and resolving hard mass. Fruit is used as a vegetable.
Growth habit
The optimum temperature for the growth period is 20-25℃, and the growth is slow when it is lower than 65438 05℃, and stops when it is lower than 8℃. It grows slowly above 30℃ and is easy to get sick. The suitable temperature for seed germination is 25-30℃, and it can germinate at 65438 03℃, but it is very slow. Germination at 30-35℃ is the fastest, but it is easy to cause overgrowth. The flowering and fruiting period needs a higher temperature, and generally it is best to keep it at 22-25℃. The lowest temperature of root growth is 6℃, and the lowest temperature of root hair generation is 65438 02℃. The fertilized fruit can develop normally at night at 8-65438 00℃. The light intensity is moderate, and it is resistant to weak light, but insufficient light is easy to cause virtual length. Plants with short photoperiod are beneficial to the growth of stems and leaves under long-day conditions, and bear fruit earlier under short-day conditions. Zucchini likes humidity, is not drought-tolerant, and is prone to virus diseases under high temperature and drought conditions; But high temperature and high humidity are also easy to cause powdery mildew. The requirements for soil are not strict, sand, loam and clay can be cultivated, and loam with deep soil layer is easy to obtain high yield.