Not long ago, the reporter and agronomist Zhang Baowen came to a tomato greenhouse in Changle County, Weifang City, when tomato seedlings were transplanted soon. In spite of this, teacher Zhang saw the problem at a glance, especially in the soil, the surface was reddish, and very hard.
The soil is severely knotted, and one can imagine that the tomato will not grow well. However, what makes Liu Donghai, the owner of the greenhouse, unpredictable is why the soil turns red? These days he has been thinking about where the problem is.
The expert Zhang Baowen observed and confirmed on site that this is because of the red moss caused by inappropriate fertilization and watering. "Red moss is the salt in the soil, and it is metabolized after pouring water." Zhang Baowen said.
According to Zhang Baowen, most of the salt in the soil comes from fertilization. Nitrogen, phosphorus, and potassium in fertilizers accumulate in the soil for many years and are precipitated by improper salting of water, so you can see the current situation. Red moss and other phenomena are a sign of soil degradation. Improper watering has accelerated the emergence of problems. In the final analysis, Liu Donghai has misunderstood fertilization.
Acidification of soil consolidation is inseparable from improper fertilization. In a conversation with Liu Donghai, the reporter learned that there are many types of tomato fertilizer he uses. "I've given chicken droppings, pig droppings, beans, and compound fertilizers," Liu Donghai said.
Experts pointed out that livestock and poultry excrement such as chicken manure and pig manure, if not thoroughly cooked, will bring many problems after being applied to the ground.
The long-term use of livestock and poultry excrement that is not decomposed or incompletely decomposed will increase the burden on the soil. Over time, problems of consolidation, acidification, and salinization will occur. In this way, the soil is not conducive to the growth of the crop, and it will cause damage to the roots of the crop.
Zhang Baowen suggested that the application of livestock and poultry manure should be fully decomposed, and scientific and rational use of fertilizer.
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