Farmers hired deep plows to plow the land back into the ground, but the wheat yield decreased by 30% the next year. Why?

Now think about what the experts said is right, but unfortunately, in the actual process, everyone only understood and implemented part of it, which is useless. There are also negative effects. Deep ploughing to reduce production? I can only say that I don't understand the disaster caused by my ability. The management of land fertility is not just deep ploughing.

Raw soil can't be used for a year, and it must be watered and fertilized. I just came home from school, and I lost money growing wheat. When I was ploughing deeply, the weather was terrible. At that time, the weather forecast could only be heard on the radio. I don't know the weather forecast Old people at home don't allow it. I found my own agricultural machinery to plough deeply. It rained heavily at the end of the day, so I went home after ploughing hard. As a result, it rained for over 20 hours. Going to the fields on a sunny day is full of mud bumps. There is no machinery in the field, so I can't sow, so I have to wait until it is dry. When mechanical energy comes in, the surface is covered with a layer of armor and can only be plowed and replanted.

Deep ploughing will turn up the original raw soil, so it is necessary to fertilize more. Depending on the kind of crops you grow, some crops have deep roots and some have shallow roots. If the roots are shallow, crops are easily blown down by the wind. Dig several deep pits at the edge of the field, use cement slurry to prevent leakage, mix straw, rotten grass and manure into the deep pits, then pour the decomposed liquid on the ground and apply solid base fertilizer.

According to the standard practice in the south, the south is warm and humid and decomposes quickly. The liquid can be leached out in half a month, and the leached liquid can be directly poured into the ground. Solid matter should be thoroughly decomposed and then turned into base fertilizer.

There is nothing wrong with ploughing the land. The mistake is that there is no time to farm the land. The time interval between planting wheat and peanut is several months, and the organic fertilizer for peanut seeds is enough. After the cultivation of winter snow and ice, this land has regained its vitality. How many mothers with many children have you met? The same is true of land. You can't just take it. You need a scientific and reasonable proportion of organic fertilizer. If you apply too much, it will also reduce production.

This is due to the negative effects of excessive use of chemical fertilizers in agriculture in China in the past 40 years. Due to the long-term excessive application of urea and ammonium phosphate compound fertilizer, the cultivated soil sac is hardened and caked. After deep ploughing, nitrate, nitrite and water-insoluble phosphate (such as ferric phosphate, calcium phosphate and calcium phosphate) which have been deposited in the deep layer of the cultivated soil bag and converted by ammonium phosphate compound fertilizer are turned over again, and the soil bag is more hardened than before deep ploughing.

In this way, the phenomenon of poor soil sac is formed. Crop harvest needs not only nitrogen, phosphorus and potassium, but also macromolecular carbon chain and peptide chain organic matter that can be absorbed by crops to maintain the nitrogen-carbon balance of nutrients needed for crop growth. Due to the above reasons, the roots of crops can not extend to the deep layer of soil bags to absorb nutrients, and the natural yield will be lower than before deep ploughing.

The best fertilizer for grain crops is organic fertilizer (efficient organic fertilizer: fulvic acid, tryptophan, osmic acid, macromolecular carbon chain, peptide chain organic matter, metasilicate fertilizer). Moreover, the application of organic fertilizer can greatly reduce the spread of harmful bacteria in soil bags, thus reducing the use of pesticides.

In the deep ploughed land, the soil particle aggregate structure is poor, the water storage capacity is poor, the humus content is low, and the soil flora is inactive, which leads to the low utilization rate of fertilizer plants such as nitrogen, phosphorus and potassium, so the crop yield is relatively low. There is a lot of old soil and dead soil on the deeply ploughed land. Only after three years of soil ripening, adding organic fertilizers such as farmyard manure, increasing soil humus content and improving soil aggregate structure can fertile land with good water and fertilizer conservation ability be gradually formed. Deep ploughing leads to too loose soil!

The root system cannot be firmly combined with the soil! After watering, the seedlings grow well, the water is soaked, and the seedlings are short of water and cannot flourish! There is too much air in the soil! Must be suppressed. I found that wheat grows well where the tires of the over-rotating seeder run over, but it is not good in other places. Repression in spring is a good way.

If you plough deeply, you should basically reach 40-50 cm, turn up the raw soil that has not been ploughed for many years, freeze it with frost and snow for more than two months, intertillage it again before the next spring ploughing, and finally harrow the ground for planting. If there is fertilizer, use it before intertillage and use intertillage to drive it into the soil. I'm not afraid without farm manure. As long as I plow this time, the effect will be visible! Again, the layman watches the excitement, the expert watches the doorway, the principle is not explained, and the cultivators can understand it!

Turning up the raw soil can not reduce the yield, but applying more organic fertilizer and miscellaneous fertilizer can ensure the high yield of crops in the coming year after the raw soil is fertile. Deep ploughing is to solve the problem of soil hardening, but the crops will definitely not be so good in the first year of deep ploughing, which requires a process. Generally speaking, deep ploughing is good for future crop planting.

Deep ploughing turned over the fertile soil layer, resulting in the lack of fertilizer in the upper layer in contact with seeds, which seriously affected crop growth. Combined with the practice of deep tillage, it is not necessary to fertilize first, but the amount of fertilization can be slightly increased. Only after deep ploughing, the fertilizer is sprinkled on the surface and mixed with the fine harrow, which can be beneficial to the growth of crops. Shallow seed, deep line. This is experience, accumulated by our ancestors. The roots of seeds must be rooted in hard land to resist drought and waterlogging. There is another saying, if you dig a foot deep, you will miss the grain. If you dig deep, the seeds will not take root, and a drought will pass. If it rains heavily, the seedlings will run away.

I think deep ploughing has two purposes, one is to solve the hardening caused by mechanical farming for decades, and the other is to increase the implied water content of soil and change the soil. Regarding returning straw to the field, it should not be directly returned to the field. To be mixed with farmyard manure, farmyard manure is like green storage feed, and then fertilized in the field to increase microorganisms in the soil. Returning straw directly to the field may destroy soil microorganisms.

Machine-ploughed soil is generally shallow, occasionally the plough layer is deep, and the underlying soil cannot be matured, resulting in uneven distribution of roots and obvious reduction of nutrient absorption rate. In addition, when the land is shallow, the weather will dry early, the roots will be soaked in water for a long time, and even die in the rainy season due to serious water accumulation in shallow soil.