Chemical fertilizers should be used scientifically, how to fertilize sorghum scientifically?

Sorghum seedlings are smaller and do not require much fertilizer, but the requirements are stricter. From heading to flowering, the plant grows vigorously, and the distribution center of nutrients changes from the stem and leaves at heading to young spikes, and finally stores them in the panicle to form grains. Therefore, ensuring adequate nutrients** during this period is the basis for high yields.

Sorghum fertilizer is best to be heavy before and then light, heavy application of Hefei (joint period), light application of booting fertilizer (booting stage), generally in two-thirds of the leaves full spread 5 8 kg of potassium fertilizer, with 40 kg of ammonium bicarbonate per mu.

Ditch strip application, hole application or sprinkling, spreading should be combined with deep ploughing or watering, in order to facilitate the effect of fertilizer. In the late stage of growth, it is advisable to properly fertilize outside the roots, and spray potassium dihydrogen phosphate or urea at the heading stage and grain filling stage to promote early maturity and increase yield. Repeat the test after 10 to 15 days.

It can protect moisture and improve temperature, grow roots and strengthen seedlings, straighten and remove weeds, and reduce weed damage. In the process of clone growth after conjugation, cultivated soil can also promote the early growth and rapid growth of lateral roots, and enhance the ability of wind lodging resistance, drought resistance and moisture preservation. From the beginning of emergence, to the end of the joint.

Opening the soil around the seedling roots, exposing the underground stem nodes, and digging the soil to dry the roots are conducive to increasing the ground temperature and promoting the development of the root system, which can make the sorghum grow robust, enhance the ability to resist drought and stay, and obtain higher yield. From flowering to maturity, the nutrients of nitrogen, phosphorus and potassium** directly affect the grain filling and maturation of sorghum. Proper nitrogen** can speed up grain filling and increase the protein content in the grains, but too much or too late can also cause the grains to ripen late, reducing yield and quality.

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In the planting process of sorghum, it is necessary to apply fertilizer reasonably, so as to make sorghum grow better, generally speaking, fertilizer needs to be applied twice during the growth period.

Sorghum is suitable for off-root fertilizer, and it is best to apply organic or inorganic fertilizer to sorghum, and it is necessary to apply two additional fertilizers to sorghum.

You can add some phosphate fertilizer, so it helps to rise, increase the yield, it's great.

Sorghum is a crop that requires a large amount of fertilizer, and experiments have verified that for every 1000 kg of grains produced, 26 kg of nitrogen and phosphorus pentoxide need to be absorbed.

kilograms, potassium oxide.

Kilogram. The ratio of nitrogen, phosphorus and potassium is. Next, I will introduce you to the special fertilizer formula for sorghum.

1. Fertilize according to the fertilizer characteristics of the variety.

For fertilizer-loving sorghum, it is advisable to apply fully decomposed organic fertilizer as base fertilizer, apply more organic fertilizer or inorganic fertilizer, and implement 2 times of top dressing. The conventional varieties with low fertilizer requirements and short growth period should be applied to the rotted organic fertilizer as base fertilizer, and the amount of top dressing is less, and one top dressing can be argued.

2. Fertilize according to soil fertility and soil properties.

Soils with low fertility and poor ripeness should be applied more organic Yuzao forest fertilizer and phosphate fertilizer. The sandy soil with poor water and fertilizer retention performance should be applied with chemical fertilizer multiple times to reduce the loss of chemical fertilizer. The topdressing of chemical fertilizers on clay heavy soil should be concentrated in the early growth stage to avoid vigorous growth and late maturity in the later stage.

Neutral or slightly alkaline calcareous soils should be treated with ammonium sulfate or superphosphate.

Ammonia should be applied to acidic soils.

or lime nitrogen and calcium, magnesium, phosphorus, etc.

3. Fertilize according to weather conditions.

In case of low temperature in early spring, it is advisable to apply phosphorus and potassium fertilizer as fertilizer per mu to promote the early growth and rapid geroning of seedlings. In the late growth stage, phosphorus and potassium fertilizers can be sprayed on the foliar surface to promote maturity.

4. Fertilize according to the nature of the fertilizer.

Human manure and nitrogen fertilizer are fast-acting and do top dressing; Organic fertilizer is mostly delayed-acting fertilizer, phosphorus and potassium fertilizer are less mobile, and are mainly used as base fertilizer or seed fertilizer.

The special fertilizer formula for sorghum is matched according to the fertilizer characteristics of the variety, soil fertility and soil properties, weather conditions, and fertilizer properties, so that fertilizer can be used efficiently.

Sorghum can generally be applied 2000-3000 kg of organic fertilizer, 15-25 kg of superphosphate, 10-20 kg of potassium fertilizer as base fertilizer, and the base fertilizer is applied in two ways: sprinkling and strip application. Strip application is applied by ridge and furrow before and after sowing.

When fertilizing, we must pay attention to choosing the correct method, and also carry out a large amount of irrigation in time, so as to ensure that sorghum can obtain a certain yield in the production process.

Yes, the fertilizer can not be too much and not too little, to carry out proportional fertilization, 10 20 kg of potassium fertilizer is required as the base fertilizer.

As an important cash crop, sorghum needs a fertile soil, water and fertilizer retention growth environment, sorghum needs to use well-rotted organic fertilizer as a fertilizer base, more organic fertilizer or inorganic fertilizer, and implement two top dressing. If the soil fertility is low, organic fertilizer and phosphate fertilizer are required.

A large amount of fertilizer is extracted during the jointing and flowering of sorghum, which can achieve its high yield and stabilize its nutrient structure.

It is necessary to replenish the nutrient solution in time, and the appropriate fertilizer should also be selected, and the right medicine should also be prescribed and pesticides should be sprayed in time.

Fertilizers that are more nutrient-rich should be used, as this is the only way to better promote crop growth.

Nutrient uptake increased rapidly at the junction and crest phases, reaching the first peak, with N, P, and K accounting for the total uptake, respectively1% and, more than half of which is absorbed by N and K, sufficient nutrients at this period have a good effect on the growth and yield formation of sorghum. From the top of the head to maturity, plants still need to absorb more nutrients to increase photosynthesis and prevent premature aging.

Under moderate fertility conditions, the application rate of nitrogen fertilizer per 500 kg of sorghum grains was kg, kg of phosphorus, kg of potassium. The fertilizers required for sorghum are mainly basal fertilizer and flour fertilizer.

The basal fertilizer is mainly organic fertilizer, 2 4 tons per square meter, plus 5 10 kg of phosphate fertilizer. Sorghum fertilizer can be divided into seedling fertilizer, grafting fertilizer and ear fertilizer. The top differentiation stage after sorghum bonding is the period with the greatest fertilizer demand, also known as the period with the highest nutrient use efficiency.

Whether the fertilizer is sufficient during this period has a great impact on the grain size, grain size and grain number of sorghum ears. The uptake of N, P and K at the grain filling stage accounted for % and % of the total uptake during the whole growth period, respectively.

The absorption of P and K was significantly lower than that at seedling stage and panicle stage, but the absorption of N was higher than that at seedling stage and lower than that at panicle stage. Sorghum is sensitive to trace elements: iron and manganese, moderately sensitive to zinc, boron and copper, and insensitive to molybdenum.

Therefore, sorghum fertilization should be balanced according to the abundance and deficiency index of trace elements and nitrogen, phosphorus and potassium fertilizers in sorghum plots. Only by supplementing the deficiency of trace elements can sorghum achieve high yields. From flowering to maturity, the nutrients of nitrogen, phosphorus and potassium** directly affect the grain filling and maturity of sorghum.

The above is a detailed interpretation of the problem, I hope it will help you, if you have any questions, you can leave me a message in the comment area, you can comment with me, if there is something wrong, you can also interact with me more, if you like the author, you can also follow me, your like is the biggest help to me, thank you.

When choosing sorghum seeds, we should choose some seeds with good disease resistance, choose acid-base balanced soil when planting sorghum, lay plastic film after planting sorghum, usually water more and fertilize more, but do not cause water accumulation, after sorghum grows, we should water more, and also increase the light of the sun, so as to achieve high yield.

It is necessary to fertilize reasonably according to the growth of plants, pay attention to the proportion of phosphate fertilizer, pay attention to the use of accumulated fertilizer, and fertilize during the plant growth period, and pay attention to the weather conditions when fertilizing.

Choose good sorghum seeds, then plant them on fertile soil, water them more and fertilize them more, and then observe the soil nutrients on time.

When using fertilizer, it is best to use fertilizer containing nitrogen and phosphorus, and also control the amount of fertilizer used, and when planting, you can also mix some other animal manure as nutrients, which can make sorghum grow better.

Attention should be paid to the planting of sorghum: 1. Pay attention to the implementation of crop rotation and stubble. 2. It is necessary to sow early at the right time. 3. When sowing, seeds should be dressed. 4. After the seedlings are set, the seedlings should be squatted before jointing. 5. Reasonable watering and fertilization, and timely cultivation after watering.

"Author" in good weather, strong seedlings transplanted flue-cured tobacco to achieve high yields. How do you pull sorghum onto flue-cured tobacco? You're obviously plagiarizing someone else's article revision.

In the jointing stage and flag picking period of sorghum, it can be chased once, and the principle of heavy before and light after light can be followed. But in fact, most of us will not do this, one is that the sorghum field is dense, too difficult to operate, and the other is that sorghum is not too valuable, generally about 15-20 kg of urea per mu. Fertilize according to weather conditions.

In case of low temperature in early spring, phosphorus and potassium fertilizer should be applied as seed fertilizer to promote the early growth and rapid growth of seedlings. In the late growth stage, phosphorus and potassium fertilizers can be sprayed on the foliar surface to promote maturity. Fertilize according to the nature of the fertilizer.

Human manure and nitrogen fertilizer are fast-acting and do top dressing; Organic fertilizers are mostly late-acting fertilizers, and phosphorus and potassium fertilizers are less mobile.

Potassium dihydrogen phosphate (0.1 percent concentration) or urea (2 percent concentration) are sprayed at the beginning of heading and grain filling to promote early maturation and increase yield. In sorghum production, we must pay attention to balanced fertilization, especially the combined application of nitrogen and phosphorus, which can avoid nutrient imbalance and significantly improve fertilizer efficiency. Sorghum is sensitive to the reaction of trace elements in iron and manganese, and the reaction of zinc, boron and copper is moderate, and it is not sensitive to molybdenum.

As the first top dressing of sorghum ear fertilizer, it is generally selected about 30-40 days after sorghum sowing and emergence, when sorghum seedlings grow to 6-8 leaves. At this time, it was the key period when sorghum began to differentiate young panicles. Timely topdressing can promote the differentiation of young sorghum panicles and increase the grain weight of sorghum in the later stage.

For varieties with a long growth period, or plots that are easy to be fertilized in the later stage, they can be topdressed twice. The principle of "heavy before and light after" should be mastered for two top dressing. The front weight is heavy chasing jointing fertilizer, and the dosage accounts for about 2 3 of the total amount of top dressing, which plays the role of promoting flower and increasing grain.

After the light, that is, lightly chase the flag fertilizer, keep the flowers and increase the grain. During the grain filling period, 1000 kg of rotting farmhouse fertilizer, 8 kg of urea per mu, and appropriate amount of potassium dihydrogen phosphate were sprayed to promote early maturity and increase yield.

What should be done is to understand the growth habits of sorghum, and to choose a suitable soil for sorghum growth for planting, so as to ensure that sorghum can also obtain high yields during the growth process. Brother.

Sprinkle. Spreading is generally used in the case of a large amount of fertilizer, before ploughing the land, the fertilizer is evenly sprinkled on the ground, and then turned into the soil brigade, or after the autumn turning, leveling and raking finely, the fertilizer is evenly raised on the ground. This fertilization method is more labor-saving, and the effect of improving soil cultivation and soil fertility is also better than that of Qiling Lao.

Before planting, two tons of organic fertilizer are used per acre, and urea can be chased every half a month after the sorghum is 40cm high.

Phases of use:Foliar silicon fertilizer was used twice from the pulling and dismantling section stage to the grain filling stage.

How to use:1 bottle spray of foliar silicon fertilizer per mu, 2 times in the whole period (5-7 days between the two sprays); Foliar spraying with 50-100 times of water on the back sprayer or gasoline engine equipment (also subject to foliar dripping); The drone equipment is mixed with water for foliar spraying 5-10 times (evenly sprayed according to the proportion and planned plots); Depending on the condition of cultivated land, the number of spraying should be increased appropriately, and one more spray should be added at an interval of 5-7 days after the last spraying, and the proportional dose should not be changed.

Choose to spray after 4:00 p.m. on a sunny day (when the sun is weak).

The role of foliar silicon:

1. Greatly reduce the content of heavy metals in rice. After application in moderately and mildly polluted land, it can reduce the cadmium uptake of rice by 20%-50% and the arsenic uptake by 20%-30%.

2. Effectively improve crop yield and improve cavity quality. Promote crop photosynthesis, enhance root growth and development and effective use of nutrients, rice yield can be increased by 5-20%.

3. Reduce the amount of pesticide residues in crops and inhibit nitrate absorption. Improve the ability to resist stress, diseases and pests.

Sorghum generally requires 2000 to 3000 kg of organic fertilizer per mu, 15 to 25 kg of superphosphate, 10 to 20 kg of potassium fertilizer, etc. Strip application is applied by ridge and furrow before and after sowing. In addition, when sowing, apply 1000 kg of rotting thin manure water per mu or less to make nitrogen fertilizer as seed fertilizer, which is conducive to the whole seedling and strong seedlings.

Top dressing is mainly carried with fast-available nitrogen fertilizer as the core dispersion, and jointing fertilizer and booting fertilizer are mainly applied. The topdressing stage of sorghum was at the jointing stage and the large flare stage, which promoted panicle differentiation and reduced floret degradation, and achieved large panicle and more grains.