Key points of rape cultivation in summer

Oatmeal, also known as naked oats, is also called bitter thistle in some places, belonging to chrysanthemum fodder. It is a pointed leaf lettuce with young shoots and tender leaves as its products. Its leaves are long lanceolate, light green in color, crisp and tender in texture. It has a very fresh, fragrant taste and has a unique flavor. It contains a lot of vitamins and a lot of calcium, iron, protein, fat, vitamin A, vitamin B1, vitamin B2 and other nutrients. It is the top grade of raw vegetables. It is known as "Phoenix tail".

Morphological characteristics of rape Brassica campestris belongs to Compositae. It is a pointed leaf lettuce with tender shoots and tender leaves as its products. the leaves are long lanceolate, it looks a bit like the "head" of lettuce, the leaves are slender and spreading, and the bamboo shoots are thin and short. From the perspective of blood relationship, rapeseed belongs to a variety of leaf lettuce-long-leaf lettuce, which is similar to the familiar lettuce, so it is also known as Niu Li lettuce. Its color is light green and its growth is strong. Disease resistance, strong adaptability, crisp and tender texture, taste extremely fresh and tender, fragrant, known as "Phoenix tail".

The high temperature in summer affects the production benefit of rape. In order to maximize the production benefit of rape in summer, we must master the main points of cultivation in summer. Let's introduce how to cultivate rape in summer.

1. Choose the superior species. Varieties with heat resistance, disease resistance, high quality and high yield, such as sesame oil and wheat vegetables, should be selected.

two。 Sow seeds at the right time. Summer sowing oil wheat is suitable for sowing from late June to early July, with 50 grams of seeds per mu, seedling age of 25-30 days, and planting from late July to early August. Autumn sowing is suitable for sowing from the end of July to early August, and it is necessary to sow 40 grams per mu.

3. Seed treatment. As the seedling period of oil wheat and vegetable in summer and autumn is experiencing high temperature, drought and rainy season, it is best to soak seeds and accelerate sprouting before sowing. The seeds were wrapped in gauze and soaked in cold water for about 1 hour, then picked up and placed under the condition of 15 ℃ ~ 20 ℃ to accelerate germination. The seeds were exposed for 2 to 3 days and then sowed.

4. Cultivation and management. Plots with high topography, fertile soil, good permeability and no Compositae crops should be selected. Apply sufficient base fertilizer and apply 5000 kg of high-quality barnyard manure, 40 kg of diammonium phosphate, 20 kg of urea, 20 kg of potassium sulfate or 200 kg of plant ash per mu. After sowing, it is necessary to build a small arch shed with 2-meter or 4-meter-long bamboo sheets on the seedbed, and then cover it with a sunshade net or old film to prevent rain and cool down. Keep the field moist and the soil loose throughout the growth and development period. During the growth period, foliar fertilizer should be applied for 2 times in combination with water spraying, usually with 0.2% potassium dihydrogen phosphate or 0.2% 0.5% urea solution.

5. Harvest at the right time. When the number of leaves of oilseed rape reaches 3034 and the plant height is 45cm, it is harvested and sold at 2cm and 3cm above the ground.