Chen Cheng's current simulated soybean variety is the autumn soybean from Hanxi Province last time.

The root system of autumn soybean varieties in Hanxi Province is not too developed, and even compared with some varieties, it is still a bit weak.

Because autumn soybeans will eventually encounter lower temperatures and lower soil temperatures, the more developed the root system of the plant is more likely to have root rot and other phenomena.

Chen Cheng put the autumn soybean varieties in Hanxi Province directly into the supercomputer and began to iterate the simulation.

His main goal is to obtain offspring with well-developed roots by setting up harsh soil conditions and allowing soybean plants to iterate under conditions of drought and lack of water and nutrients.

Sure enough, after 13 generations of iterations of the supercomputer, the root system is significantly more developed than the initial generation, with an increase of more than 50% in the root area.

Then Chen Cheng used a gene combination to screen out the genes with developed roots and implant them into the initial generation to retain its yield and other dominant genes.

As a result, in the new generation of simulations, an 18% increase in yield was achieved without increasing the amount of rhizobia symbiosis.

Chen Cheng is quite satisfied.

Of course, a 50% increase in root area does not necessarily mean a 50% increase in yield. There's also attrition in the process of development.

And when other genes do not change, it is not that the more developed the root system, the higher the yield.

This 18% increase in production is just that the developed root system has forced out all its production capacity.

In the future, we will continue to provide yields, and we can only find ways to find a way in the genes of rhizobia and soybean varieties.

For example, making the pods of soybeans bigger and longer.

Of course, the differences in soybean pods are also related to their varieties and habits.

According to the characteristics of flowering order, flowering time, flowering pod distribution, and growth state, the podding habits of soybean plants were divided into three types: infinite podding habit, finite podding habit and sub-limited podding habit.

The flower cluster axis of the infinite pod-setting habit variety is very short, and there are no obvious flower clusters at the tips of the main stem and branches, and new flower clusters can be produced when encountering suitable environmental conditions after flowering and pod-setting.

After the first flowering, the stems continue to elongate and the leaves continue to produce. If the environmental conditions are suitable, the stem can grow very high, the pods are scattered, generally 5 pods are born in each node, most of the pods are in the middle and lower part of the plant, there are only 2 small pods at the top, or even no pods, and the beans are smaller.

However, the disadvantage is that the flowering sequence is from bottom to top, from the inside to the outside, the first flowering period is early, and the flowering period is longer. The internodes are long, the plant is tall, and it is easy to grow and lodging.

The flower clusters of the indefinite varieties are long-ranging, and one large flower cluster appears at the top of the main stem and branches shortly after flowering, and then it does not continue to grow upwards. Pods are mostly found in the middle and upper parts of the plant. The flowering sequence starts from the middle and upper parts and gradually moves up to the upper and lower ends.

The first flowering period is late, the flowering period is short, the yield varies greatly in different years, and the stable yield is small. If the external conditions are suitable during the flowering period, there will be more flowers, more pods, and higher yield, otherwise, the yield will be reduced.

This type of variety has a stout stem and branches, a compact plant shape, and is erect and lodging-resistant. The apical leaves are hypertrophied and the photosynthetic leaf area is large.

This type of subfinite pendium is between the infinite pod-setting habit and the finite podding habit, and is biased towards the infinite podding habit.

Its plants are taller and larger, with a more developed main stem and poor branching. The flowering sequence is from bottom to top, and the main stem bears more pods.

Soybeans with this pod-setting habit will show the characteristics of infinite pod-setting habit when cultivated under the conditions of heavy rain, sufficient fertilizer and dense planting. Cultivated under the conditions of suitable water and fertilizer and sparse planting, it will show the characteristics of similar limited pod setting habits.

The varieties of autumn soybeans in Hanxi Province have limited pod formation, and the yield is quite impressive when the field is well managed during the planting period and carefully cared for.

That is, the investment of manpower and material resources is relatively large.

Chen Cheng originally wanted to continue his research, but he thought that Wu Bin said that there might be better varieties of soybeans in the All-Climate Agricultural Research Institute, so he dialed the phone number of the staff who stayed at the time.

After receiving a positive answer, Chen Cheng immediately decided to leave and visit the All Climate Agriculture Research Institute.

By the way, he also brought Ding Tao and Wang Kai with him.

The main reason is that after he heard about the All-Climate Agricultural Research Institute, he was very yearning for it, and even fantasized that they would build such a research institute when they had money in the future.

Ding Tao and Wang Kai naturally gladly walked with him.

The location of the Institute of All Climate Agriculture is in the city of Han An in the lower part of Hanzhong Province.

The explanation given by the staff is that it is located in the middle of the Huaxia country, which is neither hot nor cold, and the energy consumed to simulate various climatic environments is the lowest.

Chen Cheng thought about it, and it was indeed the case.

Air heating or cooling, to say that, to heat or cool the soil as well, this requires a lot of energy.

When Chen Cheng and the others arrived at the experimental building of the institute by the special car to pick them up, Zheng Kebo, director of the Institute of All-Climate Agriculture, was already waiting for them there.

After greeting Zheng Kebo, he took Chen Cheng and a few people into the experimental building.

I have to say that this experimental building is the most special and high-end that Chen Cheng has ever seen.

The laboratory building is not high, it is only three stories high, except for the first floor, in fact, there is only one floor above.

But the main core function is on the second floor.

Under Zheng Kebo's introduction, Chen Cheng saw that this floor was much thicker than other floors, mainly in the thickness of the floor.

"This ground is our soil layer simulator. It is not a common nutrient solution medium, but a real soil layer. The thickness is three meters. ”

"Three meters? That is, the thickness of the soil layer of ordinary crops. Chen Cheng said.

Zheng Kebo nodded: "The entire soil layer after three meters can be zoned to control the temperature, so as to achieve temperature control under different climatic conditions. ”

"How much energy does it take to warm or cool the soil after three meters?" Wang Kai was surprised.

Zheng Kebo said with a smile: "This is the investment project that our Ministry of Agricultural Development has demonstrated for many years and finally approved by the state. What's more, it can also control the temperature in a zone. ”

"In other words, it's not the same temperature on the whole floor, but the temperature is different in different areas?" Chen Cheng asked.

Zheng Kebo nodded.

"The experimenters can set the soil temperature according to the real ambient temperature of different crops at different growth stages."

"The Sword Comes"

Hearing him say this, Chen Cheng's eyes widened.

The country is really willing to spend money on agricultural technology research!

Of course, the investment in this institute has paid off.

For example, the research of a new variety would have required the cultivation of three crops. If it were a normal research institute, it would take three years.

But in this laboratory building, generation after generation, direct cultivation is to worry, and there is no need to worry about climate change delaying the cultivation time.

This greatly shortens the research and cultivation time of crops.

And time equals money, it equals competitiveness.