Empty stems of broccoli affect yield, how to prevent and control empty stems of broccoli?

Some pesticides should be sprayed in time, and the right medicine should be prescribed, and the growth of broccoli should also be observed, and it should also be pruned regularly, and it is also necessary to remove insect pests in time, and it should also ensure that the light is sufficient and the environment is suitable, and water and fertilizer management should also be strengthened, and it is also necessary to ensure the permeability of the soil.

Add more water, shade if the sun is particularly strong, apply some boron fertilizer, buy some pesticides to control pests and diseases, and don't have too much planting space.

Selection of improved varieties: the selection of excellent varieties that are not easy to empty stems, such as new excellent ones, is one of the effective measures to prevent and control empty stems. Timely planting:

When planting broccoli, it is necessary to arrange the sowing period in a timely manner according to the growth period of the selected variety, and select the appropriate planting period to avoid continuous high temperature for the growth of flower bulbs. Reasonable dense planting: In general, the suitable plant spacing is 30-45 cm, and the row spacing is 60-70 cm.

Fertilizer and water management: Plots with good drainage and irrigation conditions should be selected for planting broccoli, so that water can be drained during rain and irrigated during drought. In the growth period of broccoli flower bulbs, phosphorus and potassium fertilizers should be appropriately applied on the basis of appropriate application of nitrogen fertilizer.

For boron-deficient soil, kilograms of boron fertilizer can be applied per mu as base fertilizer, and then kilograms of boron fertilizer can be used for extra-root topdressing.

Broccoli, also known as broccoli, is a vegetable that was introduced to China at the end of the 19th century. Now it is planted in many places. Due to the high nutritional value of broccoli, sales are getting better and better, and more and more people are growing broccoli.

Broccoli bulb hollow means that the main stem of the commercial cauliflower bulb is hollow, but not rotten, and is one of the most common physiological diseases. Empty stem disease is mainly manifested in the ripening stage of flower bulbs. At first, the disease forms several small oval gaps in the flower stem tissue.

As the plant matures, the small fissures gradually expand and connect to form large fissures, causing cavities to form cavities in the flower stems, and severe space-time holes to expand to the flower bulbs. The surface of the hole is lignified and turns brown, but it does not decay. No pathogens were detected in the discolored tissue.

The main reason for empty stems of cauliflower is the variety. When growing cauliflower, the likelihood of empty stems increases if the chosen variety is not suitable for the local climate and soil characteristics. There is also the choice of self-reservation, and during the growth of broccoli, there will be genetic variations in the variety, which will also cause the broccoli to appear empty stems.

If broccoli is too dense, the leaves are easily crowded together and not better exposed to the sun, resulting in empty stems of broccoli. If the planting density is too small, the broccoli plants are too spaced apart and the growth rate is accelerated, which will also lead to the occurrence of empty stems. The season for growing broccoli is unreasonable.

In hot weather above 25 degrees, broccoli grows too fast and is prone to empty stems. The nutritional value of broccoli is rich in vitamin C, carotene and other vitamins, calcium, magnesium, selenium and other minerals, dietary fiber, etc., and its efficacy and function are to help control blood cholesterol levels, blood sugar, blood pressure, prevent cardiovascular and cerebrovascular diseases, improve immunity, etc.

Broccoli is a common vegetable in people's lives. Broccoli is sweet and cool, and enters the kidney, spleen, and stomach meridians. It is rich in protein, carbohydrates, calcium, phosphorus, iron, potassium, zinc, manganese, vitamin C, and carotene.

Broccoli contains phytosterols, which can effectively lower blood cholesterol levels, plus a lot of dietary fiber, which is very suitable for people with hyperlipidemia, constipation, diabetes and obesity. Regular consumption of cauliflower can regulate and prevent essential hypertension and heart disease; Broccoli is rich in vitamin C, so it can enhance the liver's ability to detoxify and improve immunity.

It may be that the nutrients of the soil are not sufficient, coupled with the lack of timely watering, the failure to prevent pests and diseases, and the selection of very high-quality varieties, which can lead to the occurrence of this disease.

On the one hand, it is because of the problem with the seeds themselves, on the other hand, because the soil is not moist enough, and most likely because of the amount of fertilizer that is being applied.

It is mainly due to the emergence of diseases, so it will lead to empty stems, it may be that there is too little planting, so it leads to a relatively fast metabolism, or it may be the lack of boron and nitrogen fertilizer and water, like these elements are added too much will also cause such a situation, the planting time is not in place, the selected soil is not up to standard, and the temperature is too high will also lead to empty stems.

When many people grow broccoli, they will find that the broccoli is in a hollow state during the growth period. This is a relatively common disease phenomenon in growing crops. The reason for the collapse of the shed is that the selected varieties are not suitable.

During planting, there is no flexible spacing. There is no scientific and reasonable fertilization, watering, etc. <>

If the selected variety is not the right or the variety is not suitable when planting broccoli, it is very easy to have hollow and empty stems. During the planting period, without good control, the spacing between cauliflowers, resulting in too long distances, will also affect the growth rate of broccoli. Then during the growth period, it is very leaky oak prone to empty stems, hollows.

And when planting broccoli, if you don't do your homework in time, you can't do your homework in time, which leads to a hollow situation if you can't apply fertilizer scientifically and reasonably. Because during fertilization, if nitrogen fertilizer is used, it will cause the branches and leaves of broccoli, and the soil growth rate will be too fast, which will lead to the occurrence of hollowing. <>

Too much or too little watering will inhibit the growth of broccoli, because in the process of growing broccoli, although nutrients and water are indispensable, if you let broccoli for a long time, keep the dry soil. In this case, it is in a state of water shortage, and hollowness will also appear. Or frequent watering, resulting in too much water, or even stagnant water, will also inhibit the growth of broccoli.

Temperatures that are not suitable and are not planted in the right season can also result. Because broccoli is more suitable for temperatures below 25 degrees, if it is higher than this temperature, then the growth of broccoli will be inhibited, so the hollow phenomenon will naturally appear. During growth, hollowness can also occur if there is a large lack of trace elements.

Even the internal structure slowly declines, so that when the broccoli does not have a lot of water, it will appear hollow. It is also necessary to carry out insect repellent treatment on broccoli to prevent pests and diseases, and take in the nutrients in it.

It may be that the density is too tight when planting broccoli, the nutrient deficiency of broccoli can not keep up, and the high temperature weather is encountered, and the quality of broccoli seeds is not good, and the lesions will lead to hollow conditions. First of all, we should choose good quality seeds, keep a certain distance when planting, and don't be too close, broccoli should be fertilized and watered more when the speed is very fast, and pesticides should be sprayed regularly.

Too much fertilization. Too little watering, rotting in the roots, drying up in the roots, pests and diseases, all of these factors can lead to a hollow appearance of the main stem of broccoli. When we encounter this hail situation, we can use the method of pouring chain oak beside the shed.

The way insect repellent is sprayed. The way of spraying pesticides, the way of spraying pesticides and the way of fertilizing to prevent this situation

It may be that the planting density is very large, which affects the ventilation of the plants, it may be that there are too many bacteria in the soil, or it may be that there is a lack of organic fertilizer. It is necessary to prune the branches and leaves in a timely manner, increase the organic fertilizer in a timely manner, and pay attention to the use of base fertilizer in the spring.

He has been stored for a long time, so it will become like this, in fact, you can usually go to see him more, and then don't put it in the bag, let him breathe the air properly, so that you can prevent a lot of damage.

Jacaranda, also known as stem cauliflower, broccoli, and broccoli, is a variant of the Brassica sprout species of the cruciferaceae family that uses green flower bulbs as a product. It originated in Italy on the Mediterranean coast of Europe and was introduced to China at the end of the 19th century. Broccoli, also known as broccoli, is one of the common cash crops in our lives, and is grown in all parts of the country. Loved by people for its rich nutritional value, it is rich in protein, vitamins, glycogen, and plant fiber.

Transplanting broccoli is sparse (broccoli is a suitable vegetable for transplanting, just like its "brother" cauliflower). In this way, there will be excess nutrients and too fast growth, resulting in the phenomenon of empty stems that are "strong on the outside and dry on the middle". At the beginning, several small notches form in the main stem, and as the plant grows and matures, these small notches continue to expand, and finally a large notch is formed, making it hollow, so what is the reason for its hollowness?

The hollow surface is lignified and turns brown. But it does not rot and is disease-free. Cut the stem horizontally to the top of the flower bulb about 15 cm down, and you can see the hollow one.

Heavy space-time holes extend to the flower stem, that is, hollow. The surface of the cavity is lignified and turns brown, but it does not decay and is free of pathogens. The presence of empty stems can be observed by cutting the flower bulb longitudinally or horizontally to the stem 15 to 17 cm below the top of the flower bulb.

Broccoli, also known as broccoli, is one of the common cash crops in our lives, and is grown in all parts of the country. Loved by people for its rich nutritional value, it is rich in protein, vitamins, glycogen, and plant fiber.

Broccoli is a succulent crop that requires a certain amount of water, and it is easy to cause empty stems if there is a lack of water or improper watering during the vegetative growth and flower bulb growth periods. The surface is lignified and turns brown, but does not rot. This phenomenon seriously affects the quality and value of commercial flower bulbs, and the loss is huge.

It may be because there are pests and diseases, which need to be cleaned up. It is also possible that malnutrition, which usually requires more fertilization. Of course, it is also possible to overwater, reduce the amount of watering, don't let the broccoli grow too fast and too tall, then it may not be a space stem.

If the broccoli has empty stems, it may be too dense during the planting process. Caused by excessive plant growth rate, excessive nitrogen fertilizer, etc.

Broccoli hollow stem (hollow) refers to the main stem of commercial flower bulbs that is hollow but not rotten, and is one of the most common physiological diseases. There are six main reasons for the appearance of empty stems in broccoli: First, the planting density is too thin.

If the plant growth rate is too fast, the incidence of empty stems will be high. The second is boron deficiency. According to experiments, in the case of boron deficiency, it can induce changes in the cell wall structure of the stem tissue, degenerate the tissue in the stem, and cause empty stems. The third is too much nitrogen fertilizer. Especially during the growth of flower bulbs, excessive nitrogen application will cause the plant to grow too fast, resulting in empty stems; Fourth, water shortage.

Broccoli is a succulent crop that needs a certain amount of soil moisture, and if there is a lack of water or improper watering during the vegetative growth period or the growth period of flower bulbs, it is easy to cause empty stems; Fifth, the temperature is too high. Broccoli is a kind of cool crop, the suitable growth temperature is 15-22 degrees, if the planting season is not properly arranged, the high temperature (above 25 degrees) during the growth of the flower bulb can make the flower bulb grow too fast, resulting in empty stems; Sixth, the variety is uncomfortable. Different varieties have certain differences in their sensitivity to empty stems, some varieties have wide adaptability and are not easy to empty stems, while others are prone to empty stems.

I don't understand, so I'll show you around. Report Water spinach white rust White rust is the main disease of water spinach. It is widely distributed and occurs widely.

The disease occurred in both protected and open fields. Usually the diseased plants are sporadic and slightly affect production; In severe cases, the diseased plant rate can reach more than 80, which significantly affects the quality of water spinach.

1 Disease identification It mainly damages leaves, and in severe cases, it also infringes on young stems and petioles. The leaves are damaged, and pale yellow to yellow-green spots appear on the front of the leaves at first, and then gradually turn brown. White raised blistering spots form on the dorsal surface of the leaves, and later blisters rupture to release white sporangia.

When the disease is severe, the lesions are dense, causing the leaves to be deformed or fall off. The petioles and young stems are damaged, swollen and deformed, thickened in diameter, containing a large number of oospores, and can also form a large number of white sporangia.

2 Pesticide control Before sowing, 72 grams of dew wettable powder with a seed weight of 0 3, or 69 grams of manganese-zinc wettable powder can be used for seed dressing.

At the beginning of the disease, you can choose 69 Anke manganese zinc wettable powder 800 times liquid, or 72 grams of dew wettable powder 800 times liquid, or 72 frost urea manganese zinc wettable powder hall agent 800 times liquid, spray. 1 time in 7-15 days. Prevention and treatment 1-3 times according to the condition.

I am from the Agricultural Bureau, I have a certain understanding of diseases, and I have relevant prevention information, so you can come to me at any time.

11: [Ling Du Feng] - Level 5.