Caixin is one of the main cultivated vegetables in South China and is a local speciality. The annual planting time of rapeseed is from October to November every year. At this time, it is just the idle period of rice harvesting. In this period, planting rapeseed can not only improve land utilization rate but also increase farmers' income. Rape is a good land-cultivating crop. During the growth period, a large number of fallen leaves can fertilize the soil, improve the physical and chemical properties of the soil, and improve the planting environment for the next year's rice planting. Jiayou Caixin No.1 is a new variety of Brassica napus L., which has been selected for many years. It is popular among growers and consumers because of its high economic efficiency, sweet taste, sweetness and nutrient richness. 1 Characteristic characteristics Jiayou Caixin No. 1 is a special rapeseed variety cultivated on the basis of improving the bitter taste of the original Brassica napus L., with sweet taste, high nutritional value and strong resistance. The variety can be used as fresh vegetables in the season, and can also be processed into dehydrated vegetables or dried vegetables. The product forms have various planting benefits. 2 Variety advantage 2.1 Good quality From the market, the main dish of Guangdong cuisine was purchased as a control, and a comparison test was conducted with Jiayou Caixin No. 1. After testing the nutritional indicators such as vitamin C, reducing sugar, total sugar, zinc and selenium, the results showed that Jiayou Caixin No. 1 was nearly 1.6 times higher than vitamin C, 3.2 times higher in reducing sugar and 3.1 times higher in total sugar than in control. Selenium is 10 times higher. The professional testing organization of the Agricultural Products and Genetically Modified Food Testing and Testing Center of the Ministry of Agriculture has tested the Jiayou Caixin No. 1 with high nutritional value. 2.2 High efficiency Jiayou Caixin No. 1 can be picked 3 to 5 times. Generally, the output of 1 hm2 is about 15 tons. If the management is good, it can reach about 37 tons, and the output value is about 150,000 yuan. 3 cultivation points 3.1 timely seeding The sowing period in the middle and lower reaches of the Yangtze River is from September 20 to November 15. Generally, the early planting yield is high, and the late sowing yield is low. The provinces adjust the planting time according to the local climate environment, and can be broadcasted or seeded. 1 Live broadcast 1 hm2 seeding volume 7.5 kg, early broadcast and late broadcast. Seeding can be carried out by seeding, spreading and on-demand. During the seedling period, when one piece of true leaves is removed, the crowded seedlings are removed, and the three leaves and one heart are moved to fill the seedlings, and the seedlings, seedlings and weak seedlings are removed. 2 seedlings 1 hm2 seedbed seeding amount 6 ~ 7 kg, uniform sowing does not leak broadcast, intercropping seedling period, 1 piece of true leaves when the crowded seedlings are removed, 3 leaves 1 heart when the seedlings, pull out small seedlings, mixed seedlings, weak seedlings. Reasonable close planting, planting density of 60,000 to 90,000 plants / hm2. 3.2 Scientific Fertilization 1 The base fertilizer is generally 1 hm2, 150 kg of urea, 75 kg of potassium chloride and 15 kg of boron fertilizer. 2 skillful application of wax fertilizer during the wintering period, generally 1 hm2 urea application 150 kg, superphosphate 375 kg, potassium chloride 75 kg. 3 timely fertilization of the general vegetable è–¹ 10 ~ 20 cm can be picked, after each picking should be timely fertilizer. 3.3 Pest Control The temperature of rapeseed in the seedling stage is vulnerable to aphids and needs timely prevention and control. 1 cultivation of flood control and cleaning the pasture to reduce the number of insects, when the drought is timely irrigation and moisturizing to promote seedlings and long. Remove the weeds in the field and nearby, and combine the field seedlings or transplanting to remove the plants damaged by the mites. 2 Deworming and attracting seedlings use silver-gray plastic film to avoid aphids. In the autumn, when the rapeseed is transplanted, the professional yellow plate coated with oil layer is set in the field, which can effectively reduce the amount of rapeseed plants and reduce the occurrence of aphids in the seedling stage. 3 Pharmacological control of cyanamide is developed by DuPont and has the characteristics of high activity, strong systemic absorption and wide spectrum of action. 1 hm2 was sprayed with 10% cyanamide amide 450-600 mL. The new variety of rapeseed Jiayou Caixin No.1 has good quality, high efficiency, short growth period, and the large demand for Chinese cabbage in South China. Therefore, Jiayou Caixin No. 1 is worthy of promotion. 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New rapeseed variety Jiayou Caixin No.1 planting technology