1, variety selection:

Generally recommended to choose the four seasons of oilseed rape, because the variety of fast-growing, less fiber, more resistant to high temperatures, and the leaf long piece of special resistance to disease, yield than ordinary varieties to be higher. The environmental requirements are also relatively low, but the summer heat needs to be germinated before sowing, so as not to affect the germination rate, can be planted throughout the year, in the loose fertilizer and water retention performance, high organic matter content of soil cultivation is conducive to growth.

2, germination sowing

Oil Wheat Vegetable seeds in the higher than 25 ℃ or lower than 8 ℃ environment does not germinate. Therefore, in the summer high temperature sowing needs to be germinated, first of all, the seeds soaked in water overnight, and then take out on a wet paper towel, sealed in the shade. When sowing, mix the seeds with a suitable amount of fine sand, separate the seeds, and then sow the seedlings. Be careful not to sow densely to prevent the seedlings from growing. At the same time, build a shed to prevent sunshine and rain.

3, transplantation

Seedling bed selection of high and dry terrain, water retention and fertilizer capacity of the plot, more organic fertilizer, per mu of cultivation field with a seedbed of 15 to 20 square meters. When the oleander grows to 3 to 4 true leaves, it can be transplanted. Water thoroughly before transplanting, transplant with soil, do not hurt the roots. During the seedling period, pay attention to appropriate light and water. Do not expose the seedlings to high temperature and light for too long.

4, management

After planting the seedlings, combined with watering and applying a small amount of fast-acting nitrogen fertilizer 1 to 2 times, generally 5 kg of urea or ammonium sulfate per acre, in order to promote the growth of the plant hair. Afterwards, we should often keep the soil moist and timely plowing and weeding. Oleander is fast-growing leafy vegetables, suitable for growth temperature of 18 ~ 25 ℃, when the night temperature is lower than 12 ℃ buckle shed. After buckling the shed, adjust the shed temperature and relative humidity in the shed in a timely manner. General relative temperature in the shed to less than 90 ｛bf｝ appropriate. Cultivation management should be kept clean and hygienic, prohibit the use of manure diluted fertilizer. Pre-growth and mid-growth of oil wheat cabbage using 0.3｛bf｝ potassium dihydrogen phosphate, urea solution for foliar spraying 3 to 4 times. Fertilizer 2 to 3 times throughout the growing period, 5 to 10 kg of urea or 10 kg of ammonium sulfate per mu, applied with watering.

5, pest control

Pests are mainly aphids, available 40 ｛bf｝Lego emulsion 800 times spray; disease is mainly downy mildew and soft rot, respectively, with 70 ｛bf｝Daizen manganese zinc wettable powder 300 to 500 times and 0.02 ｛bf｝ agro-streptomycin spray control.

6, harvest

After about a month after planting, or from about 15 leaves, you can start harvesting, usually in the morning, will be fully grown, thick and crisp green leaves can be broken off by hand.