"Do you have any ideas on how to control this pest?" Qiao Lan asked.
As for the Beijing Farming Book that Qiao Lan had read, it didn't even explain farming clearly, let alone controlling insects. Since the people in front of them were agricultural officials, they might know more.
Several middle-aged people looked at each other, with a bit of helplessness in their eyes.
"The rain in this world is controlled by God. Rain is full of insects and cannot be controlled by human beings."
Is it God’s will to co-author the long worm?
Qiao Lan doesn't blame these agricultural officials. She can only say that it is the limitations of the times. If there is no system, she herself would not understand it.
"Sir, if we don't get rid of this pest, I'm afraid many people will go hungry by the end of the year." Qiao Lan said slowly.
"...To get rid of these bugs, you must first stop raining. Once the rain stops, there will naturally be fewer bugs." One of the serious-faced old men said. "If you go to the ground to catch bugs and remove them, you will not only hurt the rice seedlings, but also
Affect other food farming."
More rain will reduce the harvest, and less rain will also reduce the harvest. These are all things that are beyond human control.
The journey of human existence is a journey of constant struggle with nature.
Even if Qiao Lan has never been in the fields, she has heard of pesticides to kill insects.
But where do you get the pesticides?
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Back in her room, Qiao Lan opened the "Atlas of Plant Protection, Pests, Weeds and Diseases" that she had picked up a few days ago. She thought the borer sounded familiar because she had read it in this book a few days ago.
Borers like moist environments and can reproduce two to three generations a year. The Duan family's land was planted late and flooded with water for a long time, which can drown some of the overwintering eggs.
The larvae of borers are flesh insects and the adults turn into moths. Currently, there are none in our own fields. When the borers multiply, the surrounding fields will suffer, including the Duan family's.
Borers can reduce rice field yields to varying degrees, up to 60%.
This is what the system calls a crisis!
Once the borers have multiplied and become more numerous from generation to generation, it will be really too late.
Although it is a complete atlas of pests, the book also talks about prevention and control. There are many natural enemies of stem borers in fields such as Trichogramma wasps and black egg wasps in the egg stage, and braconid wasps as larvae, pathogenic fungi, bacteria, etc.
Qiao Lan closed the book and felt that it was not a big deal.
The problem now is that Qiao Lan has neither pesticides nor braconid wasps.
Even if the pesticides in the system can be used by the entire Duanjia Village, the fields in the countryside are all connected together.
Pest control in the surrounding villages is not good. Even if you save your own fields, you will only be treating the symptoms but not the root cause.
Buying pesticides is not a long-term solution!
"The course on strengthening the country through agriculture should talk about how to control pests! It shouldn't be without this content!" Qiao Lan complained to the system.
[Host, the biological control class is at the back, and it is more difficult than the current course! Host, are you sure you want to start the class in advance? Taking two classes together is very tiring, and there are also after-school homework. If the host can't do it well,
It’s considered a mission failure!] 1818 advised.
"If I don't control the insects in my field, isn't it considered a failure?" Qiao Lan said helplessly, "Forget it, save the production first, and we'll talk about the work later!"
Why is she so tired? It’s not because the system throws tasks at her during class, or because they are all tasks that will be counted as failed if she can’t finish them!
Qiao Lan complained in her heart and quickly started the fourth period of strengthening the country - biological control.
As the system said, there is a lot of content in this class, and there are all kinds of terms that Qiao Lan has never seen before.
There are various names for insect pests and fungi. Qiao Lan feels that the names of dishes from various countries that she has seen in her life are not as numerous as these insect names.
I had no choice but to bite the bullet and take two classes.
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As soon as Qiao Lan returned to the house, she asked the system for lessons. In Duan Mingqing's opinion, it was probably because her mother was in a bad mood after seeing the insect queen in the field, and went back to the house in frustration.
But in the face of insect infestation, he had nothing to do. Even though Duan Mingqing had read many books and could understand countless allusions from sages, he could not tell how to get rid of the insects in the fields.
I had no choice but to find Ms. Liu.
"Mom went to take a look around the fields. She's not in a good mood. Let's prepare some dishes that mom likes to eat for lunch." Duan Mingqing said to Mrs. Liu.
Liu Sanniang nodded in agreement, wondering in her heart: "What happened to the field?"
"There's nothing wrong with our fields. It's just that there are some insects growing in people's fields in the village. My mother saw that this year's harvest will be much less."
Knowing the reason, Ms. Liu didn't ask any more questions, turned around and went to work in the kitchen, and told her sisters-in-law about the incident.
The Duan family knew very well how much the old lady valued her family's land. She had to visit her at least three or four times a day. Even the family's children and grandchildren had never been greeted by the old lady in this way.
Even if it is not her own field, the old lady loves her house and is always sad to see insects growing in the ground.
The Duan family thought for a while and realized that the old lady must be very sad.
After the meal was cooked, Wang went to the house to call Qiao Lan to eat as usual.
Unexpectedly, she returned to the kitchen after a while, and Mrs. Wang came back with a sad look on her face: "Mom said she won't eat with us at noon, so we will send some food to her room. She wants to read a book."
this?
The Duan family's daughter-in-law felt helpless and complied.
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Qiao Lan in the room was quickly browsing the content of the fourth period. Fortunately, there was a table of contents for the text content, and Qiao Lan quickly found what she wanted.
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The neem tree is a tall tree that is very common and widely planted in the south. The wood is hard and can be used to make furniture. The root bark and seeds of the neem are also used as medicine. The seeds can also be squeezed for oil and used as paint.
Qiao Lan took Duan Kunshan and a group of village men and stood in the neem forest near Duanjia Village. The rain had just stopped yesterday, and purple neem flowers fell all over the ground around the roots of the tree, wet and stuck to the mud.
"This is the neem tree. Pull the leaves off this tree. Don't cut down the tree. This tree can repel insects and can still be used next year!" Qiao Lan ordered.
Duan Kunshan looked at the tree and couldn't tell that it had such great abilities. When he was young, the old people in every household told him not to eat the fruits from this tree. They were poisonous and even hungry people would not pick the fruits from this tree.
of wild fruits.
Whether it is poisonous or not is secondary. The smell of the tree itself is not good, and children will not come to play around the tree.
Only carpenters like this tree and say that the furniture made from this tree is insect-proof.
The men with nimble hands and feet quickly climbed up the tree and cut down the branches with wood choppers.
Soon, a large tree with lush branches was stripped bare, leaving only two or three tender strips on the top.
The rest of the men were still working, and Qiao Lan took three or two people back to her own yard and taught the villagers to chop up the Kulan leaves, mash them, and soak them in water.
"Just soak this stuff overnight. It can repel not only insects in the rice fields, but also other insects. If you see any borers in the fields, remember to catch them, find something to put them in, dry them in the sun on a sunny day, and put them away.
If other crops have other insects, you can crush the borers in the same way, soak them in water, and sprinkle them on!" Qiao Lan taught.
This is another aspect of biological control.
Most of the men in Duanjia Village have never gone to school. Everyone in the Duan family can read, which is very impressive to them. Especially the old lady in the Duan family, who grows so much rice.
What the old lady said is definitely right!
Each one immediately remembered it firmly and prepared to teach it to his family when he went back.