How is canola fertilized? What is the fertilization method for canola?

Fertilization is the key to the growth of rapeseed, which needs to absorb a large amount of nutrients in order to achieve the stable goals of long spring hair, strong moss branches and more pods, so scientific management is very important. Rapeseed has a crispy texture with a slightly bitter taste. It contains a variety of nutrients and is rich in vitamin C.

Its seed oil content is 35-50%, which can be extracted from oil, and its rapeseed oil is rich in fatty acids and vitamins with high nutritional value. Not only is it a good edible vegetable oil, but it also has a wide range of industrial uses. And rape to plant well, fertilization can not be less, today will take you to understand the fertilization method of rape, do not know friends can take a closer look.

<> apply sufficient amount of base fertilizer, generally with 1000 1500 kg of compost per mu, 20 25 kg of phosphate fertilizer, mixed with topsoil after land preparation, and at the same time with 1500 2000 kg of pig manure water, mixed with an appropriate amount of chemical nitrogen fertilizer and applied to the seedbed soil and fertilizer bed soil. Before and after the seedlings are set, the mu is watered 2 3 times with 500 750 kg of rare human and animal manure. The soil is dry, the seedlings are thinner, and the seedlings are moist and the seedlings are strong.

In order to control the 4 5 leaf stage, stop fertilization and watering, squat seedlings, and prevent the growth of seedbed stage.

Early application of seedling fertilizer, when 80% of the seedbed out of the seedlings, 750 kg of diluted human manure fertilizer per mu or about 4 kg of urea mixed with water to prevent rape seedlings from growing slowly after 3 to 4 leaf stages, and the leaves are red. If the bottom fertilizer is sufficient and the seedlings grow vigorously, it is not suitable for top dressing, and the seedlings should be refined at the 4 5 leaf stage to prevent the formation of vigorous growth and tall seedlings. Canola prefers to grow in cold climates.

According to its growth habits, it is best planted in late March in spring. Otherwise, if planted too early, oilseed rape will be susceptible to low temperatures and produce chilling injury.

The base fertilizer is mainly organic fertilizer, supplemented by chemical fertilizer, which lays a good foundation for rapeseed life. 2000 kg of ordinary organic fertilizer, 25-30 kg of 45% ordinary compound fertilizer, and kg of borax per mu. How to Apply:

Combined with tillage and land preparation, deep application of organic fertilizer, compound fertilizer and boron fertilizer, to avoid too shallow fertilization, so as not to cause fertilizer in the middle and late stages of rape.

It is necessary to pay attention to the frequency of fertilizer application, sometimes do not apply fertilizer frequently, and can also be matched with different fertilizers, which can improve the overall economic benefits and make full use of fertilizers. Try to use a small number of times.

Rapeseed must eat enough fertilizer when planting, the fertilizer applied at each stage is not the same, and the fertilization should be stopped in the period of four or five leaves to prevent the phenomenon of growing in the seedbed stage.

How to choose the right time for rape and pay attention to the nutritional balance of fertilization; The method of fertilizing rape can be to apply some urea and then supplement with potassium fertilizer.

After the seedlings are transplanted and returned to green, the earlier the better, generally 3-5 kg of urea, 5 kg of potassium chloride, 300 500 grams of boron fertilizer, 750-1000 kg of thin human and animal manure water, 1-2 times need to be applied. Or apply 45-50 kg of ammonium carbonate per mu, and return to green as soon as possible after application, so as to make full use of the high temperature after the weather is sunny and promote rapeseed to root and grow leaves as soon as possible. Wax fertilizer is mainly organic fertilizer, for medium fertilizer plots, apply 1000-1500 kg of rotted farm fertilizer, 10-12 kg of superphosphate, and kg of ammonium carbonate per mu, and mix the three fertilizers together when applied.

Then applied into the rows, combined with cultivating and weeding, so as to keep warm, promote roots, protect roots and increase fertilizer.

There are many ways to fertilize rapeseed, and it should be fertilized according to the growth condition of oilseed rape during the growing season. Try to choose farmhouse fertilizer, which is natural and pollution-free.

Fertilization can be done according to the growth situation, either farmhouse manure or chemical fertilizer can be used, which will allow the plant to grow better.

According to the advantages of fertilizer demand of high-quality rapeseed in different stages of pregnancy, nitrogen fertilizer is applied at the bottom of 50%, seedling fertilizer is 30%, and sprout fertilizer is used 20%, and phosphorus, potassium and boron fertilizer are used as base fertilizer at one time. According to the advantages of high-quality rape, especially hybrid high-quality rapeseed, which are sensitive to boron and require a large amount of boron, it is best to spray boron fertilizer at the budding stage. Bottom:

Generally, the amount of boron fertilizer applied to 1 mu is 0 5～1kg。It can be mixed with other nitrate and nitrogen organic fertilizers and applied to rape fields at the seedling stage or live broadcast room.

Generally, it is most suitable to apply to the top layer of soil. The amount of bottom application can be determined according to the reasonable boron content of the soil. In general, the soil is a suitable area with boron on top.

Rapeseed is a grain crop, and there are three types: Chinese cabbage, basket and cabbage. Chinese cabbage type and basket type multi-live broadcast room, cabbage type pre-seedling transplantation. Brassica napus has a large amount of fertilizer, good harvest performance, and relatively high yield, most of which yield rapeseed per mu is 140 160kg.

The growth and development of rapeseed goes through seedling stage, sprout stage, flowering stage, horn stage and maturity. The nutrients were abundant, and the reasonable flower bud differentiation period was correspondingly prolonged, which laid the foundation for increasing the number of horns, the number of grains and the weight of grains. The immediate supply of phosphorus can improve the drought resistance of rapeseed, promote maturity and increase yield, and increase oil content. The addition of potassium can alleviate the presence of sclerotinia and promote the production of stems and branches.

Winter rape is a winter crop, and it is often a dry crop of water and drought rotation, the soil is prone to phosphorus deficiency, coupled with the low soil temperature at the seedling stage, the phosphorus supply capacity is weak, and it is necessary to attach great importance to increasing the application of phosphorus and potassium fertilizer. The experiment showed that the appropriate ratio of nitrogen, phosphorus and potassium organic fertilizer in the production and manufacturing of rapeseed was 1 for N P2O5 K2O and the average value was 1.

If the yield of rapeseed per mu is 150kg, the average fertilizer nitrogen (N) per mu must be 15 17kg, and the average fertilizer application amount of N P2O5 K2O is 16-11-9 (kg). The amount of fertilizer used also needs to be adjusted appropriately according to the amount of organic fertilizer used and the level of soil deficiency.

The application of nitrogen fertilizer, although more nitrogen fertilizer must be used at the seedling stage of rapeseed, it is not suitable for excessive use. Too much nitrogen fertilizer is very easy to cause winter rape to grow, and the nitrogen fertilizer generally applied can be moderately filled at the seedling stage. In the initial application of nitrogen fertilizer as base fertilizer, 60% can be applied to the soil as base fertilizer, and 40% can be used as winter fertilizer and sprout fertilizer to carry out top dressing.

The use of potassium fertilizer, whether potassium fertilizer is round to the growth and development of rapeseed, and the density of oil have different degrees of harm. In addition to the early application of about 80% as a base fertilizer, the rest should be carried out in the rape sprouting stage, and the leaf spraying fertilizer should also be carried out in the rape blooming and poding stage, and the spraying can use potassium dihydrogen phosphate urea solution day up to 2116.

<> "Brassica napus fertilizer requirement is higher than that of cabbage rapeseed, generally cabbage rapeseed needs to absorb nitrogen 4 5-5 5 kg per 50 kg of rapeseed, phosphorus pentoxide 1 5 1 95 kg, potassium oxide 4 05-6 4 kg, the ratio of nitrogen, phosphorus and potassium is about 1:0 3-0 4:0 9-1 1.

For every 50 kg of rapeseed produced, 2 9 kg of nitrogen, 1 2 kg of phosphorus pentoxide, 2 15 kg of potassium oxide, and the ratio of nitrogen, phosphorus and potassium is about 1:0 4:0 8.

From the seedling stage to the sprouting stage, the absorption of nitrogen accounted for about 45 of the total uptake, and the absorption of phosphorus and potassium accounted for about 20 of the total uptake from the seedling stage to the sprouting stage. The vegetative growth and reproductive growth are very vigorous at the stage of sprouts, which is the time when rape needs the most fertilizer, and the absorption of nitrogen and potassium in the sedan car reaches about 90 and 80.

From flowering to maturity, the absorption of nitrogen and potassium decreased, but the absorption of phosphorus accounted for more than 50 of the whole growth period.

Rapeseed fertilization implements nitrogen, phosphorus formula or nitrogen, phosphorus, potassium formula, and the formula ratio is 1:0 5 or 1:0 5:

0．7。Boron-deficient soil should be supplemented with boron fertilizer, the principle of fertilization is to apply plantar fertilizer, early seedling fertilizer, stable application of sprout fertilizer, skillful application of flower fertilizer. Take the bottom fertilizer to account for 70 of the total amount of fertilizer, and top dressing accounts for about 30.

1. Apply seedling fertilizer early.

Early application and frequent application of seedling fertilizer, timely application of nutrients required for rapeseed seedling stage, and the use of short high temperature before winter to promote the growth of rapeseed, achieve strong seedlings and overwinter, and lay the foundation for high and stable yield of rapeseed. Seedling fertilizer and cocoa are divided into two top dressing in the early and late seedling stages. Pre-seedling fertilizer is applied at the time of seedling setting or 5 true leaves, generally 5-6 kg of urea per mu, in the soil deficient in phosphorus and potassium, if the base fertilizer is not applied phosphorus and potassium fertilizer, phosphorus and potassium fertilizer should be supplemented; Top dressing in the late seedling stage should depend on the seedling condition and climate.

Generally, 8-10 kg of high-nitrogen compound fertilizer is applied per mu. Varieties with strong spring or areas with warm winter should be applied early, and late application can be applied in areas with low temperature or three-cropping rape in winter.

2. Steady application of sprout fertilizer.

The rapeseed stage is the period of vegetative growth and reproductive growth at the same time, the plant rapidly pulls the sprouts, grows branches, the leaf area increases, and the flower buds are greatly differentiated, which is the period when more fertilizer is needed, and it is also the key period for increasing branches and pods. Therefore, according to the application of base fertilizer and seedling fertilizer and growth, it is necessary to apply sprout fertilizer and wax stably. The base and seedling fertilizer are sufficient, and the plants are long and strong, and they can be applied less or without fertilizer; If the base and seedling fertilizer are insufficient, the fertilizer should be applied as soon as possible if there is a tendency to defertilize.

Generally, 15-20 kg of high-nitrogen compound fertilizer is applied per mu. The fertilization time is generally in the middle of sprouting, and the height of the sprout is 15-30 cm. However, if the growth is weak, fertilizer can be applied at the beginning of sprouting to avoid premature aging; The strong growth can be applied in the late stage of sprouting, when the sprout is 30-50 cm high, so as not to cause canopy closure during the flowering period.

3. Skillfully apply flower fertilizer.

The number and weight of seeds are closely related to the nutritional conditions after flowering. For vigorous growth, the amount of fertilizer at the sprout stage can be avoided or less; No application for early-maturing varieties, or less application at the first flowering stage; Top dressing during flowering can be applied as a foliar spray, with urea or potassium dihydrogen phosphate sprayed at the flowering and pod-setting stage. In addition, borax aqueous solution can be sprayed once in the late seedling stage and the budding stage to prevent the phenomenon of "flower but not fruit" and improve the yield.

The area suitable for planting is very wide, the amount of fertilizer required by rape is greater than that of rice, and the fertilization technology requirements are also stronger, to make rapeseed yield, in addition to what fertilizer is applied, it also has a lot to do with fertilization technology. Therefore, in this question, I will combine the fertilization techniques of oilseed rape in different periods to explain what fertilizer should be applied in different periods of oilseed rape. The purpose of topdressing in rapeseed flowering and podding stage is to improve the podding rate of rapeseed and prevent rapeseed from falling flowers or not setting pods.

For the choice of fertilizer, Lao Zhao suggested using potassium dihydrogen phosphate solution.

Rapeseed is one of the edible oils that people need in their daily lives, in the process of rapeseed production, in order to make rapeseed yield, in addition to selecting excellent varieties, cultivating sparse seedlings, selecting suitable planting land and pest management, one of the tasks that cannot be ignored is the fertilizer problem in the whole growth period of rapeseed.

Need more fertilizer, and the effect of potassium fertilizer alone is lower, grain weight is related to the nutritional conditions in the later stage, when the growth of rape is poor, 5-10 kg of potassium chloride per mu, the effect of increasing fruit is great, with the decay of human and animal manure and urine for seedling fertilizer, sprout stage, can be sprayed with 1% urea or superphosphate or potassium dihydrogen phosphate. In early spring, when the temperature rises to more than 10, rapeseed buds emerge one after another, which is the most vigorous growth period with the fastest growth and the most fertilizer. Sprout fertilizer is applied before or at the beginning of rapeseed sprouting, which can make rapeseed grow steadily in spring and have many strong branches.

Top dressing should be done "fast" and "early", and 25 kg of urea or ammonium carbonate can be applied per mu. For rapeseed with late sowing period, serious frost damage and poor seedling potential, it should be applied early and more often.

Or applied at the seedling stage, the rest of the nitrogen fertilizer is applied as rapeseed moss fertilizer, and there are generally more rainy days in November at the seedling stage of rapeseed, less light, and inconsistent seedling conditions. In order to get strong seedlings, rape before the five-leaf stage, about 10 kg of urea per mu, add kilograms of boron fertilizer, if boron fertilizer is applied barely, there is no need to apply it at the seedling stage.

Generally, 15-20 kg of ammonium bicarbonate or 6-7 kg of urea are dissolved in diluted manure water. The budding stage is a critical period for rapeseed to be erected in spring, when the demand for fertilizer is large, accounting for about 50% of the total fertilizer demand. The application of boron fertilizer can prevent this phenomenon from occurring, especially in hybrid oilseed rape.

1. Early application of spring fertilizer Early spring topdressing can remedy the lack of winter growth of rapeseed, promote multi-branching, and early budding. Especially for rapeseed with insufficient basal fertilizer and no wax fertilizer, topdressing in early spring is the key to high yield. Generally, 5-8 kg of urea or 10-15 kg of ammonium carbonate per mu is used.

2. Skillful fertilization The fertilization of rape should be treated separately according to the appearance and growth of rapeseed. The seedlings are weak, the growth of the poor field should be applied as soon as possible, that is, when the height is about 50 cm, 15-20 quintals of human manure per mu, plus 5 kg of urea or 10-15 kg of 45% compound fertilizer, and the field with strong growth and dark green leaves, fertilizer should be postponed or applied less.

When fertilizing, you must apply more organic fertilizer, and you must water it immediately after fertilization, so that the rape will fully absorb the nutrients.