The cultivation area of ​​early spring cabbage in our country is relatively large, but the poor mastery of the seedling technology of early-maturing spring cabbage will cause large areas of bolting or bad balling, which will not achieve the purpose of early maturation and high yield, and will cause the farmers’ economic interests to suffer serious losses. In the cultivation of early spring cabbage, we pay attention to several key techniques for seedling breeding. Guaranteed to achieve the purpose of cultivation, receive better economic benefits.
I. Variety selection
Precocious Spring Cabbage Cultivation to select early maturing varieties about 40-50 days, fast ball, cold, strong winter, resistance to bolting, good quality, high yield, good efficiency. Commonly used varieties are: Zhonggan 11, 8132; imported are: Mini Early Life, Shilong Spring, Xishuangbanna, and so on.
Second, nursery equipment
There are many ways to grow spring cabbage. According to the local temperature, environment and equipment conditions and cultivation purposes, the time to market and other comprehensive considerations use nursery methods. Generally used in the following types;
1, cold bed nursery
Cold bed nursery is also called impotence. It is the simplest, least-invested and most traditional way of raising seedlings. The main solar thermal energy is heated, the temperature rises slowly, the holding time is short, and the seedling raising time is relatively long. In combination with the wind barrier, the wind speed is increased by 2-30C.
2, hotbed
It is also called a hot bed, artificially filled with heat, such as horse dung or crop stalks, etc. The structure is similar to a cold bed. At present, the use of less, because there is less horse dung, less heating resources.
3, electric hotbed
On the basis of the cooling bed, an electric heating wire is laid on the ground, and the temperature control device becomes a hot bed for electric heating.
4, a small warm cellar
About 1.5m behind the back wall covered with straw, quite a greenhouse, but dwarf, warming with the sun light source, simple and easy investment, less management, convenient insulation effect than Yangshuo.
5, greenhouse
Also called a solar greenhouse. On the basis of the small warm cellar, it has a large height and form. It mainly uses glass and plastic film to increase the temperature of the lighting, has a good heat preservation effect, has a short investment time and is easy to operate.
6, warming hotbed
In the greenhouse, the use of solar energy and artificial heating equipment, fire, heating lines and heating equipment. Large investment, good thermal insulation effect, high temperature, rapid growth of seedlings.
III. Determination of the sowing date
Precocious spring cabbage cultivation is the key to planting time, sowing date is too early, large seedling age, in the case of warm winter and cold, easy spring and bolting, sowing time is too late must affect the early maturity of cabbage. Not reaching the goal of precocity. Therefore, the correct seeding period to master, the ground temperature stabilized at 50C, the temperature stabilized at 120C or more, according to the above requirements to postpone 40-50 days or 70-80 days is the local appropriate sowing period. Generally speaking, cold bed nursery is in mid-December, and greenhouse nursery is in mid-January. According to the local climatic conditions and nursery conditions and species ripening period, a flexible grasp, must not have been broadcast also broadcast.
IV. Preparation before sowing
1. Preparation of nutritious soil: The quality of nursery soil is related to the growth of seedlings. We require fertile soil, good physical properties and water retention, air permeability, fertile garden soil, and the former crop is not cruciferous. , Screening fine soil accounts for 75%, other available fertilizers or decomposed manures account for 5-10%, apply 0.1-0.2 superphosphate compound fertilizers, add 10%-20% sieve ash or marble, increase Bed soil permeability, and at the same time in order to reduce the disease seedlings in the seedling period, in the nutrition soil plus carbendazim, Fumei double, enemy Kesong and other disinfection.
2, the amount of seeding: cabbage seed size is small, the number of grains per gram in the 200-300, about 3g per square meter, according to the size of the number of seeds, grain weight and bud rate, the amount of the calculation of the general use per mu 30 -50 grams.
3, sowing method: You can use sowing or on-demand broadcast, add some sand or millet when sowing, mix well, evenly sowing in the surface, this method is simple, fast, but easy to uneven, there are rare dense species, Cause seedlings to compete for fertilizer, win light, inconsistent in size; on-demand broadcast, on-demand broadcast in the dish or seedlings, on-demand, time-consuming and laborious, but with less seed, uniform seed size, suitable for expensive seeds, reduce seed use, reduce seed Investment, reduce costs.
4. Poria: Watering the seedlings of early-maturing spring cabbage is very important. When the water is too large, it is easy to reduce the temperature of the soil. At the same time, the water is too large to affect the germination and it is easy to mold. Seedlings are prone to picking roots and cold roots. The water is too little. The seedlings cannot expand sufficiently to absorb water. The internal nutrients cannot be decomposed, and the seedlings grow slowly or die back. Therefore, proper watering, general nutrient soil or nutrient bowl, watering in the 8-10cm soil layer, to reach the basic saturation, must wait for water infiltration, the surface of a slight crack, before sowing, otherwise the mud will stick the seeds Affects germination.
5. Cover soil: Immediately after sowing, the earth is covered with soil. The thickness of the earth covering is of utmost importance. Be sure to sieve the fine soil. After spreading the seeds, sprinkle a layer of sieved fine soil on the surface. This is also called turning over the soil. Thickness 0.6-0.8cm, not too thick, thick soil, poor soil permeability, slow temperature rise, easy to make seed germination slow, resulting in pod seeds; too thin soil, dry soil, water evaporation, affect the seed emergence, seedlings After the match is completed, cover the soil again to prevent the cap from being unearthed and make up for cracks.
IV.
The seedlings needed to be seeded need to be divided into seedlings, but also leaf row seedlings, seedlings for the use of seedlings with no nutrition. The purpose of sub-seedling is to plant the seedlings by a certain spacing, so that the size of the seedlings, reduce the seedlings, weak seedlings, beneficial early maturing, high yield, general seedlings 10cm square, first watering and then paste seedlings, water size should be appropriate, can not be If the size is too large, water is too large and the seedlings are slow, water is scarce, root absorption is weak, growth is weak, seedlings and seedlings are separated when the seedlings are divided, and weak seedlings are removed for management.
V. Refined seedlings
Precocious spring cabbage must be cultivated before the colonization to adapt the seedlings to the external climate, the seedlings always grow under warm environmental conditions, the spring cultivation temperature changes greatly, often cold currents appear, so the seedlings must be low-temperature hardening before planting. About 10 days before planting, the tuyere grew from small to large, and the late cover was uncovered until the cover was removed 2-3 days before planting, so that the seedling gradually became suitable for external environmental conditions.
Six, strong seedlings standards:
After low-temperature exercise, the seedlings reach a certain standard, with 6-7 leaves, thick leaves, dark green color, thick stems, short internodes, well-developed root systems, and no bud differentiation in the terminal buds. High Yield.
Seven, temperature management
After sowing, the temperature is maintained at 20-250C, about 100C at night, and ventilation is started after the seedlings are out. During the day, 150C and 50C at night, timely ventilation is needed to prevent the height of the seedlings. The straw cover should be opened early and the cover must be opened. The air vents should not be too large. Suddenly small to avoid flash seedlings, timely warming after sub-seedling, 20-250C, 100C at night, after the release of mild seedlings, during the day 15-200C, night 50C, to pre-planting seedlings. When raising the seedlings, all agricultural activities, watering, seedlings, and sowing should be conducted on a sunny and windless morning.
Precocious spring cabbage breeding technology is very important, we should pay attention to every aspect, only good seedlings, in order to achieve the purpose of early maturity, high yield, lay the foundation for good economic efficiency.
Honeysuckle blossoms in March, five out, slightly fragrant, red pedicels, white flowers at the beginning, yellow after one or two days, so it is called Honeysuckle. It is also known as mandarin duck rattan because of its two flowers, one pedicle and two stamens in pairs, inseparable from each other, accompanied by male and female, and like mandarin duck dancing to each other.
Honeysuckle has long been known as a good antipyretic and antidote. It is sweet and cold and fragrant, sweet and cold and clear heat without hurting stomach, fragrant and transparent can dispel evil. Honeysuckle not only can disperse wind and heat, but also can clear and detoxify blood. It can be used for various febrile and venereal diseases, such as body fever, eruption, macula, febrile poisonous sores, sore throat and so on.
Honeysuckle Flower,Honeysuckle Tea,Honeysuckle Herbal Tea,Bulk Dried Honeysuckle Flowers
Lixian Spring Pharmaceutical Co., Ltd. , https://www.lxctyy.com