Empty cabbage, also known as bamboo leaves, vinegars and canteens, is a one-year-old or multi-year-old cranberry plant. Empty cabbage feeds on young leaves. The long harvest period of the cabbage is a summer-growing leafy vegetable that compensates for the market structure of liaoning's little leafy fruity vegetables. Empty cabbage has a strong ability to extract branches from herbs, which can be picked many times, free from high temperatures and heavy rains。
I. Botany properties and cultivation characteristics. Empty cabbage, with shallow roots, high regenerative capacity, short flat or near plumes, mid-empty, thick green. Subleaf pairs, horse-hoove shapes, real-leaf interviet, long egg shape, base leaf heart or pin shape, full edge, smooth front, thick or light green. The leaves are 13 to 17 cm long and 8 to 10 cm wide, and the bearings are 12 to 15 cm long, with a dent in the middle. Seeds are close to circular, skin thick, black and brown, weighing 32-37 g in thousands. Empty cabbage breeds with seeds or tubers。
Vacant vegetables are hot and wet. Seeds grow at more than 15°c, chicken leaves grow at temperatures of 25-30°c, and when temperatures are high, the leaves grow more strongly and the time between picks is shorter. The cabbage withstands high temperatures of 35-40°c, leaves below 15°c are slow to grow, leaves below 10°c cease to grow, frostless and die in the event of frost. High air moisture and moist soils with a high appetite for hollow cabbage, an increase in the environment over dry vines and a decrease in the quality of food consumed. Empty cabbage is also good for the sun, but it is more adaptable to dense planting. Vacuum is better served by more adhesive, water-preserving fertile soils, which require high levels of fertility and resistance, especially for nitrogen。
Ii. Varieties. (1) white flower species: long heart shape of leaves, large tubers, light greens, white flowers, tenderness and good quality. Like big bones, big white. (2) purple species: tubing and flowers with light purple, with many fibres and poor quality and high resilience. (3) gian yarn: suitable for border soil or clay cultivation, nitrogen fattening, smutishing, lumbering, fat leaves, high yield, good quality and adaptability。
Iii. Elements of cultivation. The production of hollow cabbage depends on the number of picks and the weight of each pick, while the increase in the number of picks and each harvest depends primarily on the three key elements of “early planting, extra fertilizing, and hard picking”。
1. Land selection: empty cabbage is suitable for decomposed and humid soils, with strong branching, unsettled roots, rapid growth, high cultivation density, high harvests, productive and fertile. Therefore, the option should be to plant the land to the sun, to the fertile, to the water. Inland cultivation is more effective。
Seeding: the field in central liaoning is generally seeded in mid-april, either by stripping or on-demand, with an acreage of 15 kg. The protected areas can be planted earlier。
3 field management: carnival vegetables range from leaf to four-to-five leaf seedlings at a temperature of 20-25°c. The long-term temperature of the tubers is 25-35°c and the light conditions are not stringent. There is a high demand for water fertilizer, which, in addition to the application of foot-based fertilizers, is followed by a large number of fats, ranging from one to two times for each pick, to a low and thick concentration, dominated by nitrogen. Drought and lack of fertilizer affect both production and quality. Empty cabbage can be harvested, if it is a sexual harvest, with seedlings at a height of 12-15 cm. In the case of multiple harvests, they can be uprooted at a height of 18 to 21 cm in conjunction with seedlings, with a range of 12 to 15 cm, leaving seedlings that can be collected several times, starting with the first pick at a height of 33 cm, with two rods in the base. The second pick will be taken by section 2 of the stem base. The third pick took the first penis left behind by the tuber base to reach its re-emergence. In this way, the chickens that are later picked can remain strong. Hand-strangling is appropriate at the time of extraction, and if it is cut with iron such as a knife, it can be rusty。
4 pest and pest management: the empty cabbage consists of pests such as moths, red spiders, aphids, leafy worms, etc., to be combated in a timely manner. The disease, which is heavily affected by rust, can be administered at a 10-day interval of 1:1:200 ghz。
