The main reasons for not applying farmyard manure are as follows:
First, the cost of applying farmyard manure is high, but the effect is slow. The effect of a ton of cattle and horse manure is not as good as that of 100 kg of chemical fertilizer, not to mention that there are fewer and fewer large livestock in rural areas. Some people who specialize in livestock and poultry breeding generally have professional partners to deal with animal manure for vegetable or flower planting. In addition, because the application of animal manure needs more manpower, it needs to be ploughed after application, and the labor cost is higher.
Second, some seedling operators are greedy for more money. I can't wait for the seedlings to grow ten centimeters a year, so I don't need slow-acting farm manure and blindly apply quick-acting chemical fertilizers, forming a vicious circle. The seedlings are growing faster and faster, the land is getting thinner and thinner, and more and more chemical fertilizers are used. What did this lead to? That is, due to long-term application of chemical fertilizers, the soil has hardened and lacks vitality. Although trees grow well, their internodes become longer, their lignification degree decreases, their cold resistance and wind resistance are weakened, trees are more prone to diseases and insect pests, and some originally solid trees become unstable.
To develop the seedling industry healthily, we must first produce high-quality seedlings, which can only grow in high-quality soil. Therefore, we must look at the soil problem in the nursery from a strategic perspective! As the saying goes, "native gold", but the "soil" here refers to fertile soil, not barren soil. Therefore, we should learn to raise land while raising seedlings. Although the effect is slow, it has stamina, which is a good thing that works in the present and benefits the future!
So how do we need to raise land?
First, farmyard manure and chemical fertilizer should be used reasonably and matched reasonably. Properly matched, the two complement each other, which is not only beneficial to the growth of plants, but also makes the soil more fertile.
The second is to let the land "rest" properly. Land, like people, needs rest. After several years of cultivation, the soil can be left idle for one or two seasons, which can restore soil fertility and effectively reduce the occurrence of pests and diseases.
The third is to take the way of seedling rotation. In this way, the soil can maintain high fertility, the land after rotation is more dynamic, and the planted seedlings grow better.
Fourth, use microorganisms and bacteria to enrich the garden. Improve soil structure, improve soil fertility and cultivate strong seedlings.
Nursery breeders should pay attention to the problem that nursery land is getting thinner and thinner at present, and local governments and relevant organizations should also attach great importance to it, actively guide and standardize it, and promote the healthy development of seedling industry.
To plant the land well, we should not abuse chemical fertilizers or pesticides, which is easy to pollute the environment.