How to deal with the phenomenon of excessive fertilizer and water causing the growth of plants in th

Prepare for planting in advance, cultivate strong seedlings, sow seeds in a timely manner, prevent and control pests and diseases in time, ventilate and prune in time, and control fertilizer and water. It can be controlled by spraying a tonic solution or a chlormequat solution.

The sowing density should not be too large, so as not to crowd the seedlings after emergence. Eggplant fruit and vegetable seedlings generally need 2 3 square meters of seedbed per mu of field. Remove the ground cover in time after the emergence of seedlings.

Timely discharge of thin vegetable seedlings, eggplant fruits, melon vegetables planting 20 days, vegetable seedlings often appear overcrowded, at this time should be appropriately moved vegetable seedlings, management should be after the seedlings unearthed, before false planting, after the false planting seedlings, before the planting ventilation and light transmission, reduce temperature and humidity, control the excessive growth of vegetable seedlings.

If it is found that crops are growing, it is necessary to use artificial chemical control methods to prevent and control them in time. However, the chemical control time should not be too early and too late, and it is best to carry out it at the bud stage of the seedlings. There are two commonly used methods:

1. Spray chlormequatin. In the bud stage or early flowering stage of potatoes, spray 50 kg of 50 chlormequat 2000-2500 times solution per mu on the leaves. 2. Spray paclobutrazole.

15 25-30 grams of wettable powder can be used per mu, mixed with 45-50 kg of water, and potato leaves can be sprayed.

It depends on what type of fertilizer you put in! If you apply too much inorganic fertilizer (that is, chemical fertilizer) like general, the leaves will wilt, and then slowly turn yellow or die directly! If it is true that the leaves are dried out due to excessive fertilization, then you can dilute the excess fertilizer with a lot of watering!

The old leaves are yellow, which is a normal metabolism; If the new leaves turn yellow, it may be sick! If it is yellow and wilted, it may be a problem with the roots, and it may be hypertrophied and burnt the roots! It can be soaked in running water for 10 hours to dilute the fertilizer!

There is a lot of fertilizer, the leaves are burned, and the soil is changed and watered.

It wilts when it is well hydrated

The growth rate of ginger seedlings accelerates around the beginning of autumn, which is the transition period from seedling stage to vigorous growth period. Since then, the growth rate of the plant has been greatly accelerated, the nutrients have gradually accumulated, the rhizomes have expanded rapidly, and the demand for fertilizer and water has increased significantly. Therefore, before and after the beginning of autumn, it should be combined with the removal of ginger grass, the removal of ginger shed or mulch film for top dressing, which is called "turning fertilizer".

This time the top dressing requires a large amount of nutrients and is comprehensive. A combination of long-acting organic fertilizer and fast-acting fertilizer is applied. Generally, 75 kg of cake fertilizer is applied per 667 m2, or 50 kg of beans, 30 kg of diammonium phosphate, and 25 kg of potassium sulfate.

The topdressing method is: after pulling out the ginger grass, open a deep ditch about 15 cm from the base of the plant in the north measurement of ginger ditch (east-west ditch) or east side (north-south ditch), apply fertilizer into the ditch, and then cover the soil to seal the ditch and cultivate the ridge, so that the ditch where the original ginger plant grows becomes a ridge, and the ridge becomes a ditch, and finally watered thoroughly.

In mid-September, the aboveground growth of the plant was basically stable, and the growth center was rhizome. In order to ensure that the nutrients are sufficient during the rhizome expansion process, the third top dressing can be carried out at this stage, which is called "supplementary fertilizer". Especially for the soil with low soil fertility and poor water and fertilizer retention capacity, 10 15 kg of ammonium sulfate, 15 20 kg of potassium sulfate or 25 kg of compound fertilizer are generally applied per 667 m2.

When topdressing, it can be applied in a small ditch under the ridge, or the fertilizer can be dissolved in water and flushed in.

During the vigorous growth period, the plants grow fast, grow in large quantities, and require a lot of water. In order to meet the water demand for the vigorous growth of ginger, it is generally watered every 4 to 6 days, and the relative humidity of the soil is often maintained at 75% to 80%. Water the last 2 to 3 days before harvest to ensure that the rhizomes of ginger are covered with some soil after harvest for easy storage.

In the southern ginger area, the temperature is low and the rain is more in the early stage of seedling growth, so in order to prevent the ginger field from accumulating water, it is necessary to do a good job in clearing ditches and draining the field. In the later stage of seedling growth, the temperature rises, and in the place where the water source is insufficient, it is often combined with cultivating soil before and after the summer solstice, and the ginger row furrow surface is covered with straw, wheat straw, rape stalk, rape pod, broad bean pod, etc., which has a good effect on drought prevention and moisture protection.

From the analysis, it can be seen that too much fertilization at one time will make the concentration of soil solution too high, which is greater than the concentration of plant cell solution, and plant cells will lose water, resulting in "burning seedlings" due to water loss, and even causing plant death; Soil drought will wilt plants, because there is very little water in arid soil, and the roots of plants absorb less water, and the water consumed by the transpiration of plants will not decrease, which will make the water in the plant body less and less, and cause the plant to wilt Therefore, when transplanting plants, it often causes damage to young roots and root hairs, and the function of plants to absorb water is greatly reduced, causing plants to wilt or die Therefore, when transplanting, it is necessary to bring a large mound of soil to reduce the damage of young roots and root hairs, and protect root hairs and young roots. Improving the water absorption capacity of the roots is conducive to the survival of transplanted plants

Therefore, the answer is: burn seedlings; Root hairs

From the analysis, it can be seen that too much fertilization at one time will make the concentration of soil solution too high, which is greater than the concentration of plant cell solution, and plant cells will lose water, resulting in "burning seedlings" due to water loss, and even causing plant death; Soil drought will wilt plants, because there is very little water in arid soil, and the roots of plants absorb less water, and the water consumed by the transpiration of plants will not decrease, which will make the water in the plant body less and less, and cause the plant to wilt Therefore, when transplanting plants, it often causes damage to young roots and root hairs, and the function of plants to absorb water is greatly reduced, causing plants to wilt or die Therefore, when transplanting, it is necessary to bring a large mound of soil to reduce the damage of young roots and root hairs, and protect root hairs and young roots. Improving the water absorption capacity of the roots is conducive to the survival of transplanted plants

Therefore, the answer is: burn seedlings; Root hairs