Key points of spinach cultivation in autumn

Spinach is an annual or biennial herb in the subfamily Chenopodiaceae. Also known as spinach, Persian grass. Edible from leaves and young stems. Valuable is, in the cutting-edge technology, mobile spinach MOVE SPINACH released foreign news: green energy has a new breakthrough-spinach solar cells, spinach all year round growth, is a rare good material. Spinach originated in Persia and was cultivated 2000 years ago. Later spread to North Africa, by the Moors spread to Western Europe, Spain and other countries. Spinach was introduced into Tang Dynasty in 647. Spinach taproot developed, fleshy red root, sweet edible. Spinach is a cold-resistant vegetable, long-day plants. North China also has winter sowing, spring harvest, commonly known as head-buried spinach. Sowing or sowing is possible. Spinach main diseases are downy mildew, virus disease, anthracnose, the main pests are aphids, leaf miner and so on.

Spinach contains vitamin A, vitamin B, vitamin C, vitamin D, carotene, protein, iron, phosphorus, oxalic acid and so on. Although spinach is a vegetable with more iron, it is not much different from other vegetables. The mistake which caused the misunderstanding that spinach had extremely high iron content was made by E. In a book by von Wolf, a decimal point for spinach's iron content is printed as a comma, so the number is multiplied tenfold and the Popeye cartoon is derived. Contains a lot of plant crude fiber, can promote intestinal motility, conducive to defecation.

Key points of spinach cultivation in autumn

Spinach cultivated in autumn has a short growth period and high economic benefit.

1. Variety selection: The varieties that can be selected are: (1) Japanese spring and autumn big leaf spinach, more heat-resistant, not easy to bolting;(2) summer sowing 30, early maturity, heat-resistant, fast growth speed.

2. Soil preparation and fertilization: in August, 5000 kg of farm manure or 150 kg of leafy vegetable compound fertilizer shall be applied per mu, and high beds with a width of 2 meters shall be made after ploughing and fine harrowing.

3. Sowing at appropriate time: before sowing, rub the seed coat and soak it in cold water for 24 hours, and change the water once in the middle. After soaking, take out the seeds and put them into plastic woven bags, place them in 5 DEG C cold storage or the lower layer of refrigerator for germination for 2-3 days, and sow the seeds after germination. Sowing in late August, seed amount per mu 10 kg, sowing, drilling can be, after sowing suppression and watering. The plots sown in late August in the south had better be covered with sunshade nets and watered frequently at the same time, watering once a day in the evening until emergence.

4. Field management: 7-10 days after sowing, weeds should be removed in time. After seedling emergence, breaking the heart to the first harvest, urea 15 kg, ammonium sulfate 50 kg per mu. Keep soil moist before and after emergence, and control watering amount properly at high temperature to prevent excessive humidity from rotting seedlings.

5. Prevention and control of diseases and insect pests: the main disease of spinach is downy mildew, and the seriously ill plot should be rotated for 2-3 years; strengthen seedling management, and the sowing should not be too dense, so as to facilitate ventilation and light transmission and improve the disease resistance of plants; for chemical control, spray with 75% chlorothalonil 600 times solution. To control spinach leaf miner, spray 1000 times of 40% dimethoate emulsion or 10ml of maggot with 15kg of water once every 7-14 days.

6. Harvest: Harvest in batches from the end of September to the first ten days of October.