Material preparation: prepare colored pens and a piece of a4 paper.
1, draw an irregular circle.
2. Draw two irregular circles.
3. Draw uneven places on the potatoes.
4. Draw spots on potatoes.
5. Draw some small details on the potatoes.
6. Colour the potatoes dark brown.
7. Color another cup of potato light coffee.
Potato belongs to Panicum of Solanaceae. The stems on the ground are rhombic and hairy. Genetically modified potatoes: smooth surface. The leaves of potato are single leaves at birth, and gradually grow into odd-numbered and unequal-length pinnate compound leaves, ranging in size from ellipse to rectangle.
The corymb grows at the top, and the flowers are white or blue-purple; Fruit is a berry; Tubers oblate or spherical, glabrous or puberulent; Potato skin is white, reddish or purple; Potato meat has white, light yellow, yellow and other colors. Flowers bloom in summer. Potatoes are named after their resemblance to bells.
Potatoes originated in tropical mountainous areas of America, spread to India in the16th century, and then to China, and are now widely planted in temperate regions of the world. Potatoes like cold, cool and dry climate and have strong adaptability. Suitable for loose and fertile sandy soil, with short growth cycle and high yield. Because seed propagation will lead to character separation, the most common propagation mode of potato is asexual tuber propagation.
Sowing technology:
Sowing date: When the soil temperature 10 cm steadily passes through 10℃ for three consecutive days, the seeds can be sown. Sowing amount: per mu120 ~150kg seeds. Density: according to the variety and soil fertility, reasonable close planting. Early-maturing varieties should be densely planted; Late-maturing varieties should be planted thinly.
Make a ridge on the flat ground or break the original ridge, and then close the ridge. Ridge spacing is 80 ~ 90 cm, and it is cultivated in a single row. Plant spacing 15 ~ 20 cm, covering soil thickness 10 ~ 15 cm. The number of seedlings per mu is 4000 ~ 5000.