In the afternoon of the same day, Song Shuqing came to the vicinity of the Nanshui County Agricultural Bureau and placed some objects in the house that had been rented in advance.

Then, while the Agricultural Bureau had not yet gotten off work, he put the computer, documents, etc. in his office.

"Knock knock. ”

I was busy in the office when there was a knock on the door.

Song Shuqing turned his head to look, and hurriedly greeted him with a smile: "Director Dong." ”

The person who came was Dong Xiao, the former deputy director of the Nanshui County Agricultural Bureau, and the current director.

Dong Xiao nodded and said with a smile: "Xiao Song, from today onwards, you will be a member of the Agricultural Bureau." Your previous achievements in Tianhu Village are obvious to all, and I believe that you will definitely be able to make new achievements here......"

"Nanshui County has many rural areas and a relatively extensive agricultural base, so let's do it well. ”

After some words of encouragement, Dong Xiao was about to leave, and Song Shuqing said at this time: "Director Dong, I have something to tell you. ”

"What's the matter?"

"A few days ago, Mr. Lin of Vientiane Technology said that he would prepare to clean up invasive plants. The first place to clean up is in our Nanshui County. Song Shuqing said.

"So, with regard to invasive plants, I would like to set up a special project to clean up invasive plants in the county. ”

Dong Xiao sighed slightly: "The prevention and control of invasive plants is carried out every year in the county. ”

"Moreover, because there are many rural areas in Nanshui County, most of the invasive plants will be disposed of by local farmers. Except for certain public waters, the harm is not particularly great. ”

Song Shuqing said: "For invasive plants, Vientiane is the first time to carry out treatment. They have pledged that Vientiane's governance of Nam Shui County will be completely free of charge. ”

Dong Xiao was stunned: "Free?"

Song Shuqing nodded: "And as far as I know, the treatment methods of Vientiane are more durable, and if there are no new invasive plants, it is almost equivalent to a permanent cure." ”

"That's amazing!"

Different from Song Shuqing, Dong Xiao can be said to have worked from the grassroots level of the Agricultural Bureau little by little. The problem of invasive plants is well understood.

If Vientiane could really eradicate invasive plants so thoroughly, it would be a great boon for agriculture and forestry, and even have an impact on hybrid rice.

Dong Xiao thought for a while, and then said: "The most important invasive plant in Nanshui County is the 'hollow lotus seed grass', which is distributed in paddy fields and rivers......

Hollow lotus seed grass, also commonly known as "water peanut", is one of the first invasive alien species in China.

It is an aquatic and semi-aquatic weed native to South America and introduced to our country from North America in the early twentieth century.

Around the sixties of the twentieth century, China tried to cultivate it and use it as animal feed.

Although it was later found that the plant contains a certain toxicity and has a poor taste, pigs and cattle and other domestic animals do not like to eat it, and it is not suitable for feed, but it has spread and caused great harm.

The hollow lotus seed grass has a strong vitality, is not afraid of drought and waterlogging, and as long as there is a small section in the field, it will grow wildly.

After pigs and cows have eaten it, grass knots in the manure can also grow grass.

Lotus grass growing in farmland robs crops of sunlight, water, fertilizer and growing space, eventually causing serious yield reductions, while lotus grass growing in rivers and lakes can quickly cover the water surface, affecting other aquatic plants and seriously affecting irrigation and drainage, water transportation and aquaculture.

In addition, if the grass decays and dissolves in water, it can also produce toxic substances that can pollute water quality and poison aquatic crops.

In addition, the vigorous proliferation of hollow lotus seed grass will also provide a breeding space for mosquitoes and flies to spread diseases.

Although this thing has a certain practical value, such as medicinal use, the demand is not large, and after it is salvaged, it can basically only be disposed of as organic waste.

And because of its strong vitality, it is much more troublesome to deal with it thoroughly and prevent regrowth.

……

"Hollow lotus seed grass?"

A few days later, Lin Han was in Song Shuqing's office and got a document about the hollow lotus seed grass, as well as relevant documents related to Vientiane's help in the Agricultural Bureau to remove the hollow lotus seed grass.

Song Shuqing said slowly: "The invasive plant in Nanshui County is this hollow lotus seed grass...... The locations are already on the map. ”

The shape of Nanshui County is about a square, with an area of 1,300 square kilometers, and the whole is quite regular.

Lin Han compared it according to the map, and estimated in his heart that as long as he stayed in the five main distribution areas for a while, the hollow lotus seed grass in the county should be completely dead and there would be no one left.

Song Shuqing couldn't help but ask at this time: "Eh, can you tell me no, what is your handling method?"

Lin Han smiled and said nothing, seeing that he was even more curious: "Just talk about the principle, okay?"

"Principle...... I guess it's energy conservation. ”

Song Shuqing was speechless: "Conservation of energy, why don't you say that it is the conservation of mass and energy." ”

Lin Han smiled: "Biological things, it stands to reason that you should know best." I only got a B in biology at the beginning, so I don't know any of this. ”

Song Shuqing waved his hand: "Forget it, I'll ask Teacher Chen about it in the future." I really don't understand you, where do you get so much black technology. ”

"By the way, how much did you invest in cleaning up the hollow lotus seed grass in the past?"

Song Shuqing casually picked up a document next to him, flipped through it, and said: "The distribution of hollow lotus seed grass is mainly in farmland areas and some rivers. Since farmers clean up a lot on their own, the main cost of cleaning up is still on river management. ”

"The cost of all parties is about 2.2 million yuan a year. In other words, the free governance of Vientiane has saved Nanshui County at least more than 2 million yuan. ”

More than 2 million ......

Lin Han suddenly felt a little distressed, and he gave away more than two million for free.

Forget it, it will be regarded as supporting the construction of a new socialist countryside.

Lin Han and Song Shuqing chatted casually for a while, then left the Agricultural Bureau and sat directly on their own Maybach.

"By car. ”7110