Coriander, also known as clams, is native to the Mediterranean coast and is cultivated throughout China. The leaves have a special aroma, which is the main edible part, and the seeds are even more seasoned. Parsley is a cool and refreshing vegetable that has traditionally been cultivated in winter and spring. In the summer and autumn, when the cultivation is off-season, although the yield is low, the market price is high and it is one of the varieties that are cultivated efficiently. The following are the highlights of the summer and autumn cultivation techniques for parsley. First, varieties of varieties used parsley, can be divided into small coriander and large parsley. Large parsley has slightly less aroma, but it grows faster and yields more. Small parsley has a strong aroma but slow growth and low yields. Is now more choice of large grains of parsley. Summer season cultivation of parsley, should use good heat resistance, disease resistance and resistance to Thailand's four seasons large grain parsley varieties. Second, seed treatment Coriander seed germination difficult at high temperatures. Because the fruit of coriander is spherical and contains 2 seeds, the fruit must be split before sowing to facilitate uniform seedlings. Seeds were soaked with 1% potassium permanganate solution or 50% carbendazim wettable powder 300 times for 30 min, washed out, soaked in clean cold water for about 20 h, and germinated at 20-25°C. Third, the site selection fertilization choose irrigation and drainage is convenient, loose and fertile plots, the former crop after the harvest in time to deep turn 20-25cm, sun soil 15d. In order to facilitate the use of shade nets, deep ravines with a height of 20 cm, a width of 1.2 m, and a width of 30 cm are made. Due to the short growing period of coriander, combined with 667 square meters of site preparation Shi Zhengfeng eco-fertilizer 100kg Gain Yibi 30g, or excrement manure excrement 3500kg and cake fertilizer 150kg, phosphate fertilizer 50kg, topsoil to leveling fine. Fourth, timely sowing According to the regional climate characteristics, in mid-May to early July sowing parsley, both to obtain higher yields, but also access to higher market prices. Seeding is generally suitable for sowing, if the supply of fast-growing seedlings should be highly dense planting, sowing rate of about 8-10kg per 667 square meters. After sowing water, cover 1cm thick straw to promote seedling emergence. Fifth, keep the soil moist before field management. When 80% of cilantro emerges, straw should be removed. Summer and high temperatures limit the growth of parsley. Therefore, after the removal of straw, shade nets and insect nets should be covered in a timely manner, and attention should be paid to cover in the morning and exposing at night, and ventilation should be strengthened to prevent diseases. Parsley due to short growing period, early weeding, early seedlings, early recovery of fast-acting nitrogen fertilizer. Generally should be 7 days after the emergence of Qimiao seedlings, two true leaves when the Dingmiao, seedlings from the 3--4cm. The water is usually poured about once every 8 days, and when the seedling height is 3 cm, the first fertilizer is chased. After applying urea 8-10 kg and boron fertilizer 250 g per 667 m2. After one time of water, one-time foliar dressing was performed with 300 times of Zhengfeng Ecological Paste plus 0.3% urea solution. Add appropriate amount of potassium dihydrogen phosphate at the later stage of foliar application. In the first half of harvesting, it is advisable to spray a solution of 95% of 25mg/kg to promote the elongation of the petioles, increase the number of leaves, and increase the yield. VI. Pest control Because parsley has a pungent scent, few insect pests occur. Diseases mainly include seedling stage damping-off disease, adult stage virus disease, anthrax and spot blight. After 5 days of emergence, the non-pollution fungicide was sprayed with 3% oxygenated oxygen 800 times for one time, and then sprayed with 600 times of polyoxo every 7 days for a total of 2 to 3 times to prevent the occurrence of damping off. It can also prevent anthrax and spot blight. If viral disease occurs, it can be controlled by 800 times potassium permanganate solution or virus K1000 solution.
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