Management measures after the onion disaster
2022-09-30 10:05:33
In the recent period, heavy rains continued to fall in Xiajin County, causing some green onions to accumulate, and scallion roots, yellow leaves, and dry tips occurred on the green onions. Technical experts of the County Vegetable Bureau rushed to the onion base in time to guide the farmers to make green onions. Post-disaster field management reduces economic losses. The expert management points for post-disaster management techniques are:
1. Timely drainage. Onion fields should be promptly removed from the storm after heavy rain, and the green onions should be planted in order to remove the decayed foliage, enhance the ventilation and light transmission, and remove silt on the leaves to facilitate photosynthesis. The conditional farmers can use the well water to re-irrigate once after removing the stagnant water, which is commonly called “æ¶æ°´å›â€ to reduce the soil temperature and increase the concentration of oxygen in the soil so that the green onions can maintain normal breathing state.
2. Fertilizer timely. After the disaster, the loss of soil and fertilizer is more, but at this time the weak root activity of the green onion, plant yellowing, photosynthesis decline, do not immediately apply root fertilizer, should be appropriate to add leaf fertilizer; wait until after the onion plants resume normal growth, per acre large onions Topdressing ammonium bicarbonate 30 kg or urea 15 kg.
3. Breaking the ground. After the sunny days, the soil is severely compacted, a layer of sticky skin forms on the surface, the soil is confined, and the air is difficult to circulate. It is necessary to do a good job of cultivating loose soil in a timely manner to break down the hard surface of the earth and prevent root and soil-borne diseases from occurring. At the same time, the weather is hot and humid. Vulnerable to disease, we must use DuPont Kelu, Preco, can be killed and other agents 600 to 800 times liquid, prevention and control of green onions, downy mildew, soft rot and other diseases.
1. Timely drainage. Onion fields should be promptly removed from the storm after heavy rain, and the green onions should be planted in order to remove the decayed foliage, enhance the ventilation and light transmission, and remove silt on the leaves to facilitate photosynthesis. The conditional farmers can use the well water to re-irrigate once after removing the stagnant water, which is commonly called “æ¶æ°´å›â€ to reduce the soil temperature and increase the concentration of oxygen in the soil so that the green onions can maintain normal breathing state.
2. Fertilizer timely. After the disaster, the loss of soil and fertilizer is more, but at this time the weak root activity of the green onion, plant yellowing, photosynthesis decline, do not immediately apply root fertilizer, should be appropriate to add leaf fertilizer; wait until after the onion plants resume normal growth, per acre large onions Topdressing ammonium bicarbonate 30 kg or urea 15 kg.
3. Breaking the ground. After the sunny days, the soil is severely compacted, a layer of sticky skin forms on the surface, the soil is confined, and the air is difficult to circulate. It is necessary to do a good job of cultivating loose soil in a timely manner to break down the hard surface of the earth and prevent root and soil-borne diseases from occurring. At the same time, the weather is hot and humid. Vulnerable to disease, we must use DuPont Kelu, Preco, can be killed and other agents 600 to 800 times liquid, prevention and control of green onions, downy mildew, soft rot and other diseases.
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