Lettuce planting to prepare before what to do?

Lettuce is more delicate, both afraid of heat and cold, below 0 will be frozen, the lowest can tolerate -3, and the smaller the seedling, the worse the cold resistance. 4 or more began to germinate, the optimal temperature for seed germination was 15 20, and it was difficult to germinate above 30. Seedlings 10 20 grow best.

Lettuce does not have strict requirements for soil quality and is suitable for growing in slightly acidic sandy loam soil. It likes water but is not waterlogged, the humidity in the field is best kept between 65% and 80%, the humidity is too low to affect the growth and development of lettuce, and too high will induce a variety of diseases.

Lettuce requires more water, and it is not drought tolerant. The water should be kept properly in the juvenile stage, not too wet, to prevent the seedlings from aging and growing. At the time of the germination period, the rosette leaves begin to grow, properly control the water, in order to make the root system grow deep, to squat seedlings, lettuce is a semi-cold-tolerant leafy vegetable, like cold and humid climate, not tolerant to high temperature and heat.

Therefore, according to the growth requirements of lettuce for temperature, it can be planted in spring and autumn in North China and the Yangtze River Basin, and can be sown from October to February of the following year in South China, and harvested from November to April of the following year.

When planting lettuce, the land preparation requirements are fine, the base fertilizer is best to choose fully rotted farmhouse fertilizer, an acre of land needs 3000-3500 kg, plus 20-30 kg of ternary compound fertilizer, do furrow according to different seasons, soil quality and determine. Generally cultivated in spring and autumn, suitable for flat furrows, summer should do small high furrows, the growth rate of lettuce is very fast, its growth cycle is also quite short, open-air planting in spring and autumn is the majority, there are no too high requirements for soil and temperature, there are planting areas in the north and south, you can also plant in greenhouses, harvest out-of-season lettuce.

To plant lettuce, the first thing is to cultivate seedlings, do a good job in seedbed management, and finally carry out planting management. The cultivated seedbed soil is generally composed of half garden soil and half humus soil mixed with fertilizer. The seedbed soil must be finely leveled, and at the same time, each cubic soil should be mixed with urea, and it should be sprayed with a small watering can.

Watering should maintain the plant's demand for water, but not excessive, and control the humidity not too much, in order to prevent disease. Lettuce topdressing should be mainly farmhouse fertilizer, and it can also be combined with compound fertilizer.

Before planting lettuce, you need to take care of the soil first, loosen the soil first, fertilize the soil after the soil is fluffy, and cultivate the seedlings at the same time, and wait for the seedlings to take root before planting.

Before lettuce planting, it is necessary to choose the right variety, loosen the soil, prepare the land, water it properly, and dig pits.

You must choose a good land, and you must choose a well-drained land, the land must be ventilated, and you must be able to ensure that you can get the sun. And the temperature must be guaranteed to be around 10 to 20, not too much watering, and the humidity should be kept at about 65% to 80%.

The work that needs to be done before planting is to choose an acidic soil, so that it will be suitable for its growth, and when the seedlings are young, they must be watered more, but not too wet, and try to give them some base fertilizer or farm fertilizer when applying fertilizer.

Lettuce is sown in spring and autumn.

Lettuce seedlings should be selected with good water retention, fertilizer retention, and fertile sandy loam. Bed soil preparation: 10 square meters of seedbed with 10 kg of rotted organic fertilizer, 10 kg of ammonium sulfate, kg of superphosphate, kg of potassium sulfate, fully mixed and evenly paved with fine rake, watered with foot water, sown after water infiltration.

In order to make the sowing even, a small amount of fine sand can be mixed into the seeds during sowing, covered with centimeter-thick tidal soil after sowing, and covered with plastic film to moisturize. The sowing rate per mu is 30-50 grams. When the seedlings begin to be unearthed, the furrow mulch should be uncovered in time to prevent growth.

There are three ways to grow lettuce at home:

1. In fact, lettuce can be planted all year round, as long as the temperature is below 20 degrees, it can be sown at any time, and if the temperature is high, you want to plant lettuce, you can also choose some heat-resistant lettuce varieties to plant, the general lettuce is very suitable for sowing in autumn, so that it will continue to grow in winter.

There are many types of lettuce, some are smaller, some can form balls, some have larger leaves, some have a better taste, and some purple-leaved lettuce, and the planting methods are similar.

2. As for the choice of lettuce planting tools, as long as it is a container that can be loaded into the soil, it can be planted, pay attention to flower pots or other containers, foam boxes, empty oil drums, and there must be drainage holes, otherwise the growth is not good, and it is easy to yellow leaves, because the potting soil is easy to accumulate water.

It is recommended to use some plastic long pots, so that you can plant a lot of seedlings, and it is easy to place, plant a few pots on the balcony, more neat, clean and beautiful. You can use ordinary garden soil for potting soil, and if you don't want to buy soil back, you can also mix soil yourself.

It is to add some fertile humus to the soil, or add some well-rotted organic fertilizer, chicken manure, sheep manure, etc., to increase the fertility of the soil, and continue to provide nutrients for lettuce seedlings.

3. Before sowing, make the potting soil looser, softer, pinch the potting soil by hand, it will not form a clump, if the seeds are sprinkled unevenly, you can mix them with the sand, sprinkle them in the pot, sow them for the first time, try to sprinkle a little less seeds, and be even.

Then water thoroughly and put it on the balcony in a well-lit, ventilated place with a temperature of about 20 degrees, and the germination rate will be very fast. After germination, when three leaves generally grow, if the seedlings are too many and too dense, you can pull out some, or wait until the seedlings grow up again, you can transplant some seedlings.

The transplanted lettuce seedlings will grow better, and the transplanted and untransplanted seedlings are completely different, and the transplanted lettuce will grow particularly lush and the leaves will be larger. In short, the spacing between seedlings should not be too small, otherwise they will not get enough nutrients and sunlight, and the growth will be poor.

After germination and seedling, it is necessary to increase the light, after growing up, it is necessary to supplement some fertilizer, which must be fertilized, you can pour some cake fertilizer water, or sheep manure soaked in water, watered in the pot soil, there is really no organic fertilizer, you can give some compound fertilizer or chemical fertilizer, no fertilizer must not grow lush, and at the same time watering should be timely, the potting soil is too dry, and the lettuce leaves are not watery enough.

Only sufficient fertilizer and water and light can make the leaves more delicious and taste better. Lettuce is very easy to grow, you will know if you have planted it once, and the balcony has become a world of lettuce, and it has become a beautiful and vibrant little vegetable garden, and you can eat the freshest lettuce.

The adaptation temperature was 15 20, and the germination uniformity was poor when it was lower than i5, and the seed germination rate was significantly reduced when it was higher than 25 due to the hindrance of water absorption by the seed coat, and the germination rate was hindered above 30. Some lettuce varieties germinate faster under the light, the role of various light qualities is different, red light promotes germination, suitable soil: lettuce planting is suitable for sandy loam soil, because this soil has a strong water retention capacity and good drainage.

Good soil is conducive to the germination and emergence of lettuce, which also grows quickly. If the soil is a little more fertile, that's the favorite environment for lettuce.

About 10 grams per mu need to be planted, the seedbed area is about 10 square meters, the covering soil can not be thick, the lettuce seed is very small, the arch soil is weak, the soil can be covered with centimeters thick, and then covered with a thin grass curtain, the curtain is drenched with enough water, and the topsoil is dry and hard, so as to facilitate the emergence of seedlings. Of course, in addition to planting lettuce at a suitable temperature, there are also certain conditions for soil and water and fertilizer requirements. Lettuce is suitable for growing in slightly acidic soils rich in organic matter, and the water requirements vary from growing season to season.

Choose fertile, rich in organic matter, water retention, strong fertility, good air permeability, convenient drainage and irrigation of slightly acidic soil for planting. Cultivate the land early, break the rake flat, and then apply the rotted organic fertilizer and compound fertilizer as the base fertilizer, deep ploughing and drying the ground, we are under normal circumstances, under normal circumstances, lettuce has ball lettuce and non-ball lettuce, from the outside shape, the leaves of ball lettuce will be wrapped, showing a spherical shape The leaves of the lettuce that do not ball are grown in bulk. In terms of yield, the bulb lettuce will be larger and heavier per plant.

Lettuce has a growing period of about two to three months, and if you choose to plant it in spring and autumn, there are two advantages, one is to plant at low temperatures, no pests and diseases, and the other is that there is no need to spray pesticides to eliminate pollution. And full-time vegetable farming, in order to have fresh vegetables all year round, lettuce is not very high requirements for the soil, the general soil can basically be planted, lettuce can not only be planted in the open field, in the family, but also some people will use pots on the balcony to plant, not only as a potted plant to watch, but also as a vegetable to eat.

First of all, when planting, we must choose the soil is more fertile and broad land, in the process of fertilization, we must choose farmhouse fertilizer, do not use the fertilizer bought outside, but also often water the plants, if there is a occurrence of pests and diseases, we must spray insecticides in time.

Be sure to pay attention to the defense of some pests and diseases, spray pesticides in time, watering in time, apply organic fertilizer, and then clean up some dead branches and rotten leaves in the field, and also have sufficient light.

Lettuce requires clayey loam soil rich in organic matter and strong water and fertility, lettuce likes to be slightly acidic, and lettuce needs more potassium. During the growing season, nitrogen, phosphorus, and potassium fertilizers are required to be used together. The plot of planting lettuce should be cultivated carefully, and sufficient base fertilizer should be applied before planting, and deep turning should be turned after application, and the bottom water should be watered, and the furrow should be made after drying.

Lettuce likes moisture, and sufficient water is required throughout the growth period**. After planting, water the seedlings slowly. After watering the seedlings, the plots that are not covered with plastic film are cultivated and loosened for weeding.

Combined with watering, nitrogen and phosphorus fertilizers are applied in stages. And timely spraying of vegetable stems to make the plant stems thick and vigorous. At the same time, it can improve the ability to resist disasters, reduce the amount of pesticides and fertilizers, and reduce residual toxicity.

At the same time, it is necessary to strengthen the comprehensive control of pests and diseases, and at the same time cooperate with the spraying of new high-lipid film to improve the utilization rate of active ingredients of pesticides and consolidate the control effect.

In the planting we have to choose their own varieties to be planted, under normal circumstances, folded leaf lettuce and erect lettuce in the northern region is suitable for planting in spring and autumn, the climate and environment of the southern region is suitable for the growth of lettuce throughout the year, so lettuce for the southern region planting, the quality of variety selection is the most important requirement, if we choose a variety is not good, then you then how you plant the yield will not be very high. According to your local climatic conditions, cultivation season, cultivation methods and market demand, choose the right varieties

When sowing seeds, the density of the seeds should be higher; The seeds of lettuce can be planted in the way of hole sowing, and 3 to 4 lettuce seeds per hole can be planted when sowing, and the lettuce with balls and hearts can be planted when the lettuce has three leaves. Therefore, the lettuce can be germinated, the seeds can be soaked in water for 6-7 hours, and after being fished out, they can be wrapped in a cloth and placed in the fresh-keeping room of the refrigerator, and they can be sown when more than half of the seeds are exposed. Lettuce transplanting period needs 3-5 leaves is better.

The leaves of lettuce are tender and crisp, and are rich in nutrients such as protein, fat, sugar, vitamins and trace elements. Lettuce leaves contain lettuce, which has good health effects on promoting blood circulation, analgesia, diuresis, and sleep. Lettuce can be grown all year roundWrinkled leaf lettuce:

Wrinkled leaf lettuce is not a ball, basal leaves, the leaves are long oval, the petioles are long, the leaf margins are wavy with notches or deep fissures, the leaf surface is shrunken, and the clusters of leaves are like large flowers, among which the better performance is purple leaf lettuce, safflower leaf lettuce, etc.

Long-leaf lettuce Long-leaf lettuce, also known as erect lettuce, grows upright or semi-erect, the leaves are oblong-obovate, the leaf margins are wavy or jagged, the leaf surface is slightly wrinkled, and it does not form balls or can form loose cylindrical leaf-strengthening balls in the cold season. The effect of preventing vascular diseases is favored by consumers because of its rich nutritional value. Therefore, growers can appropriately increase the planting area of lettuce, and at the same time further do a good job in the planting and cultivation management of lettuce, meet market demand, and continuously improve the economic benefits of lettuce lettuce planting.

Lettuce is generally sown in spring and autumn, lettuce is more like a cool place, generally in a place where the sun is more sufficient, to do a good job of shading the lettuce, it is best not to let the sun shine directly, otherwise the lettuce is particularly easy to die, when planting lettuce should apply more organic fertilizer, quicklime, keep a certain distance, generally in the morning and evening can be properly watered some water, the temperature during the day can not exceed 25 degrees, to do a good job of insect control.

Sowing time for lettuce. Lettuce likes a cold climate, so the sowing time is generally carried out in spring and autumn, spring generally begins to sow in February and April, and can be harvested in May and June, and autumn sowing can be sown at the end of August, and can be harvested in September and October, because the characteristics of different varieties of lettuce are different, when choosing the sowing time, it is necessary to understand the description of the lettuce seeds bought, and then sow in combination with the above sowing time. Spring and summer are suitable for sowing loose leaf lettuce, such as cream lettuce, color leaf lettuce), more heat-resistant, autumn and winter are suitable for sowing ball-bearing lettuce, also called lettuce), not heat-resistant.