How to do if the shed is bitter
Recently, the reporter learned from an interview with Sun Jiaji Street in Shouguang City that the last bitter gourd had been handled by the garden, and the bitter gourd that had been planted earlier had begun to be introduced. It is understood that the bitter gourd in the current shed is mostly planted around mid-June.
What are the problems with the current bitter gourd and how should we take measures? The reporter conducted an investigation and interview with the former Wang Village’s arched bitter gourd.
“The current bitter gourd has only begun to attract vines and it has only been planted earlier to begin pollination. Therefore, there are not many diseases. As long as they are regularly prevented, the problem is not serious.â€
"Look at the number of insect nets on your vehicle. Are you ready to use it in this shed?" the reporter asked.
"Yeah, now we must put on the shade net, otherwise the bitter gourd leaves in the shed will soon eat out the pests," said the vegetable farmers.
Bitter gourd leaves are eaten away! Can this not work, and the pests in the sheds are really so serious?
The reporter decided to go into the shed to investigate. Observed in the shed, it can be found that the top of the bitter gourd plant has begun to contact the steel wire. However, careful observation of the plant leaves revealed that almost 3-5 leaves of each bitter gourd have been eaten by pests. Some of the leaves have holes, and some of the leaves appear to be “hazel holes,†leaving only the veins. On the lower leaves of the bitten leaves, excreted feces can be found.
After carefully searching for some plants, the reporter found pests on the back of a leaf. The body length of the insect was only about 1 cm. It was green and even more surprising. The pests were still creeping.
“Now this pest infestation is severe and it is sprayed once every six or seven days, but the pests are still not well controlled. In a few days we see pests again and the leaves are constantly being victimized,†said the vegetable grower.
"When we hang a vine in a shed, we often see 'flying moth' flies. Is it because of these 'moths'?" The object was introduced.
At this time, the reporter noticed that the air outlet around the arch was wide open, and no insect net was installed. It was precisely because there was no obstruction by insect nets that the “moth†was able to infiltrate the greenhouse and lay eggs on the leaves, resulting in indoor pests in the greenhouse. serious.
"Why do I continue to have pests after spraying many times? Does it mean that the drugs are not correct?" asked the farmer.
"It's not that your spray isn't right. It's not good. It's because the 'moth' lays eggs on the leaves. Under the current temperature conditions, it will continuously hatch larvae. But most insecticides only kill adult worms." And nymphs, the effect of killing the eggs is not good. This is an important reason for the effect is not obvious after spraying." Reporter explained.
What should we do about vegetable farmers?
First of all, it is recommended that vegetable farmers timely spray pesticides to prevent insect pests, and they can spray avermectin, methacrylate and other agents for prevention and treatment.
Pay attention to the temperature of the greenhouse when spraying, to avoid damage caused by injury.
Second, set up insect nets. This is the main measure to prevent the occurrence of pests. At present, the light is getting stronger and the temperature is getting higher. It is difficult to control the temperature in the shed from the air alone at the top, and the bottom wind must be matched. At this time, it is also the easiest period for pests outside the shed to move into the shed. To prevent pests from moving into the shed, the pest control network must be put on before the wind is released.
According to the characteristics of arch sheds, the focus of setting up pest control nets is on both sides. It must be ensured that the insect nets are tightly fitted, the upper part is close to the film, and the lower part is close to the ground, there is no gap, so as to avoid pests flying into the damage.
Yunan Walnut,Drying Walnuts,Organic Raw Walnuts,Premium Walnut
Inner Mongolia Hengxintonghui Supply Chain Management Services Co.,LTD , https://www.hxthfood.com