Leek high-efficiency scale planting technology
When does the leek grow?
Artificially cultivated with leaf-leafed amaranth and loose leaf amaranth, spring, summer and autumn can be three seasons. Spring planting is planted from late February to late April; summer planting is planted from early July to late August; and autumn planting is conducted from early September to early October. North China is viable in the second season, and spring planting is conducted from early March to late April. Autumn cultivation is from early July to mid-September. The use of plastic greenhouses or greenhouse cultivation can be planted at any time from early October to early February.
One, variety
Wild leeks vary in shape from region to region, and there are no fixed varieties. At present, the cultivars of leeks mainly include two types of leeks and leeks. Plate leaf leek also known as big leaf leek, thick head, large and thick leaves, cold and heat, fast growth, early maturity, good appearance of goods; but winter is weak, easy to bolting spring, usually for summer and autumn Cultivation. Mosaic amaranth, also known as lobular leeks, broken leaves leeks, leaves narrow and short, leafy villi, more heat-resistant, drought-tolerant, strong winter, spring and autumn can be cultivated.
Second, cultivation technology
(1) Selection of land and land preparation: The adaptability of leeks is very strong. In addition to using land preparation for planting, it is also possible to use ridges, wind barriers and leisure land and planting on the land. If growing into a piece, it is better to choose less plots of weeds, and the front pot is tomato, cucumber, corn, garlic seedlings, and continuous cropping should be avoided. When planting deep plowing 15 centimeters, apply enough basal fertilization, make fine stalks, and make rakes that are 2 meters wide (even ditch), with a height of 15 centimeters for irrigation.
(b) sowing: generally sowing, spring sowing every 667 square meters for 0.75 ~ 1kg, summer broadcast for 2 ~ 2.5kg, autumn broadcast for 1 ~ 1.5kg. Spring sowing in late February to late March; summer sowing in late July to mid-August; autumn sowing in early September to early October. While spreading, strive to be even, after sowing, gently step on the surface with the feet, so that the seed is in close contact with the soil, in order to facilitate the seed water absorption, early emergence. For example, during the summer and autumn, new seeds sown in the year were sown. Since the seeds have not yet come out of dormancy, they need to germinate in the autumn. Therefore, seeds are often placed in a low temperature (refrigerator) at 2-7°C for sowing in summer and then sowed after germination.
(III) Field management: Amaranth is strong in stress resistance, and there are few pests and diseases occurring during growth. Amaranth prefers a cool climate. After sowing, it must cover shading nets. On the one hand, it acts as a shade and cools; on the other hand, it can also reduce ground moisture. The transpiration was opened in the evening. Spring and summer cultivation of leeks is usually top dressing 2 times due to short growing season. The first time when two true leaves; the second time after 15 to 20 days. Each time a hectare of human excrement 22500 kilograms of urea or 150 kg of urea. The picking period of autumn sowing leeks is longer. Each harvest should be top dressing once and top dressing can be done 4 times. The density of leeks grows with a large amount of water, so it is often necessary to water to keep the soil moist. In the summer and autumn, after experiencing thunderstorms, it is necessary to use a watering can on the morning of the next morning to wash off the splashes on the leaves or the cabbage core mud or it will affect the growth.
Spring sowing in the normal climate 5 to 7 days can Qimiao; Xiaqiu sowing 3 days can Qimiao. Before the emergence of a small amount of water pouring, to keep the soil moist is conducive to emergence. After emergence, pay attention to proper irrigation, keep it moist to avoid drought, and pay attention to drainage and flood prevention during the rainy season. Autumn sowing leek should be properly controlled before the winter watering, prevent leggy to safely overwintering.
Leek plants are relatively easy to mix with weeds and have difficulty weeding. For this reason, we should try our best to choose small plots of weeds to cultivate, and we should always pull and weed the plots in the management. We should do early pulling, pulling small, and pulling, and do not need to press large pressure seedlings or pull big grass wounds.
(4) Harvesting
Leek harvest properly can increase production. Usually pick small picks with a small knife, but pay attention to evenly. Wherever the seedlings are thin, they must be kept even if they are large seedlings; the seedlings in the dense areas must also be picked up, so that the left seedlings grow evenly to increase the yield. Spring and summer sowing of Chinese leeks grow rapidly, from sowing to harvesting generally 30 to 50 days; harvesting 1 to 2 times. The sowing of autumn leeks from sowing to harvest takes 30 to 35 days, and then they are harvested 4 to 5 times successively. The Yangtze River valley can be delayed until late spring. In order to increase the output, the supply period will be extended, and harvesting will be carried out with fine collection and diligent income collection.
When harvesting, large plants with 10 to 13 true leaves were harvested and rooted. Left middle and small seedlings continue to grow. At the same time pay attention to the first densely planted, and later dilute the place, so that the remaining plants are distributed evenly. Watering in time after harvest to facilitate the growth of the I strain. It produces 37,500 to 45,000 kilograms per hectare.
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