Farmers hired deep plows to plow the land back into the fields, but the wheat production dropped by 30% the next year. Why?

Now that I think about it, the experts are right. Unfortunately, in the actual process, if everyone only understands and implements part of it, it is of little use. There are also negative effects. Deep cultivation and production reduction? It can only be said that it was caused by not understanding Deli. Land fertility management is not about plowing once and for all.

The raw soil layer cannot be used every year, and water and fertilizer are required. When I first came home from school, I suffered a loss when planting wheat. The weather was bad during deep plowing. At that time, the weather forecast could only be heard on the radio. Don’t understand the forecast. The elderly at home won't allow it. I found the farm machinery myself for deep plowing. It rained heavily when we were almost finished, so we had to finish plowing and go home. As a result, it rained for more than 20 hours. When the weather was fine, I went to see the fields. They were all covered in mud. No machinery could be put into the fields, so we couldn't plant seeds. We had to wait until they were dry before planting. When mechanical energy is gained, the surface will be covered with a layer of armor, and we will have no choice but to rotary till it and then plant it.

Deep plowing will turn up the old soil, so use more fertilizer. Depending on what kind of crops you plant, some crops have deep roots and some have shallow roots. Crops with shallow roots are easily blown over by the wind. Dig several deep pits on the edge of the field and use cement paste to prevent leakage. Mix straw, rotten grass, excrement, etc. into the deep pits. After decomposition, the liquid is poured into the ground and solid base fertilizer is poured.

The standard practice in the south is that the south is warm and humid, and it decomposes very quickly. The liquid is leached out in half a month. The leached liquid can be poured directly into the ground, and the solid material must be thoroughly decomposed and then deeply turned into base fertilizer.

There is nothing wrong with cultivating the land deeply, but the mistake is not giving the land time to cultivate. There is a gap of several months between wheat planting and peanut planting, and peanut planting has enough organic fertilizer. After the severe cold wind in winter, The cultivation of snow restores vitality to the land. Have you seen how many mothers who have given birth to many children have raised beautiful ones? The same goes for land. You can't just ask for it. You need to scientifically mix it with a reasonable proportion of organic fertilizers. Applying too much will also reduce production.

This is the result of the negative effects of the excessive use of chemical fertilizers in my country's agriculture in the past forty years. The cultivated soil bag is hardened and agglomerated due to the long-term excessive application of urea and ammonium phosphate compound fertilizers. After deep plowing, the nitrate, nitrite, and ammonium phosphate converted from the urea fertilizer and already precipitated deep in the cultivated soil bag will be removed. The water-insoluble phosphates (such as iron phosphate, calcium phosphate and calcium phosphate are not soluble in water, only the dihydrogen salt of phosphoric acid is soluble in water) precipitated and transformed by the compound fertilizer are re-turned and then reach the surface of the soil bag, and the soil bag becomes It is harder than before deep plowing, and the alkalinity of the soil is greatly enhanced (crops can barely survive in an acidic environment, but cannot grow in highly alkaline soil pockets, sometimes resulting in no harvest).

This has resulted in the phenomenon of poor cultivation soil. A good harvest of crops requires not only nitrogen, phosphorus and potassium, but most importantly, it also requires macromolecular carbon chains and peptide chain organic matter that can be absorbed by crops to maintain the growth of crops. Balance of nutrients nitrogen and carbon required for growth. Due to the above reasons, the roots of crops cannot extend into the depth of the soil bag to absorb nutrients. Naturally, the yield will be lower than before deep plowing.

For grain crops, the best fertilizer is organic fertilizer (high-efficiency organic fertilizer: fulvic acid, tryptophan, lycosan, macromolecular carbon chain, peptide chain organic matter, metasilicate fertilizer). Moreover, the application of organic fertilizers can greatly reduce the spread of harmful bacteria in soil pockets, thereby reducing the use of pesticides.

In deeply cultivated land, soil particles have poor aggregate structure, poor water storage, low humus content, and inactive soil flora, resulting in low utilization rates of fertilizers such as nitrogen, phosphorus, and potassium by plants, so crop yields are relatively low. Low. Deeply cultivated land has a lot of old soil and dead soil. It must undergo about three years of soil maturation, increase the application of organic fertilizers such as farmyard manure, increase the humus content of the soil, and improve the soil aggregate structure, so that it can gradually form a soil with good water and fertilizer retention capabilities. Fertile land. Deep plowing of the land has caused the soil to be too loose!

The roots cannot be firmly combined with the soil! The seedlings grow well after being watered, but the seedlings are unable to flourish due to lack of water! There is too much air in the soil! Must be suppressed. I found that wheat grew well in areas where the tires of a deep-rotating ground seeder were pressed, but not in other areas. Spring suppression is a good idea.

If you plow deeply, it should basically reach 40-50 centimeters. Turn up the raw soil that has not been plowed for many years. Leave the frost and snow to freeze for more than two months. Plow again before the next spring plowing, and finally rake. Ground planting. If fertilizer is available, use it before cultivating and work it into the soil together with cultivating. Don’t be afraid if you don’t have farmyard manure. As long as you cultivate one more time, the effect will be visible! As the same saying goes, laymen watch the fun, while experts watch the door. If the principles are not explained, farmers can understand!

Is it possible to turn over the raw soil without reducing the yield, but apply more organic soil and fertilizer to make the raw soil fertile, and the crops will be high-yielding in the following years? Deep plowing is to solve the problem of soil compaction, but deep plowing in the first year The crops will definitely not be that good. This requires a process. Generally speaking, deep plowing will be of great benefit to future crop cultivation.

Deep plowing of fields removes the fertilizer-rich soil layer, causing the upper layer in contact with seeds to be deficient in fertilizer, seriously affecting crop growth. Based on the actual practice of deep plowing, do not apply fertilizer first, but increase the amount of fertilizer slightly. You can only spread the fertilizer on the surface of the deep plowed field and mix it with a fine rake to supplement the lack of fertilizer in the surface soil, which is beneficial to the growth of crops. Plant shallowly and travel deeply. This is experience, accumulated by our ancestors. The roots of seeds must be rooted into hard ground to withstand droughts and floods. There is also a saying that if you dig a foot deep without harvesting grain, if you dig deep enough, the seeds will not take root firmly, and it will be over if there is a drought.

If the rain is heavy, the seedlings will be washed away.

I think there are two purposes of deep plowing. One is to solve the hardening layer caused by decades of mechanical farming, and the other is to increase the water content of the soil and change the soil. Regarding the return of straw to the field, it should not be returned directly to the field. The straw should be mixed with farmyard manure and then decomposed like silage, and then fertilized on the field to increase the microorganisms in the soil. Direct return to the field may destroy soil microorganisms.

Machine-cultivated soil is generally very shallow. Occasionally, the cultivated layer is deep, and the land below cannot be matured, resulting in large gaps, resulting in uneven root distribution and a significant decrease in nutrient absorption rate. If the soil is shallow, the There will be a phenomenon of dry weather and early rainy season. Due to the hardening of the shallow soil and serious water accumulation in the lower part of the soil, the root system will be soaked in water for a long time and even die.