There are many kinds of farmyard manure and the source is large and the quantity is large. It is convenient for local materials, used locally, and the cost is relatively low. The nutrients contained in it are comprehensive. It contains not only nitrogen, phosphorus and potassium, but also calcium, magnesium and sulfur. , iron and some trace elements. These nutrients are mostly in the state of organic matter, which are difficult to be directly absorbed and utilized by crops. They must undergo chemical and physical action in the soil and fermentation and decomposition of microorganisms to gradually release nutrients, so that the fertilizer effect is long and stable.
In addition, the application of organic fertilizer is conducive to the formation of soil aggregate structure, the ratio of air and water in the soil is coordinated, the soil is loose, and the ability to retain water, heat, ventilate and protect fertilizer is increased. Farmyard manure needs to be used together with chemical fertilizers in order to fully absorb the nutrients in the fertilizer.
Human excrement, animal husbandry excrement, kitchen waste (leftovers leftovers) and manure, green manure, compost and manure, etc. Other names: Notes on the use of green manure farmyard manure: Although farmyard manure contains a wide variety of nutrients, However, the content is relatively small, and the fertilizer efficiency is slow, which is not conducive to the direct absorption of crops.
The effect of chemical fertilizer and farmyard manure application is better than that of chemical fertilizer or farmyard manure alone. However, the following points should be noted when applying: the application time of farmyard fertilizer is slow, it should be applied early, usually once before sowing; , effective, generally should be applied about 7 days before the peak of crop absorption and nutrition.
Application method Farmyard manure should be combined with deep tillage into the soil tillage layer, or combined with ridges to buckle into the ridge bottom. Nitrogen fertilizer with farmer's fertilizer, 30% as base fertilizer and 70% as top dressing. Phosphate fertilizer and potash fertilizer are applied as a base fertilizer at one time.
The application of quantitative fertilizers and farmyard manure application may vary according to the crop and soil fertility. For example, corn is planted on a thin ground, and 4 cubic meters of farmyard manure, 24 kg of urea, and 13 kg of phosphate fertilizer can be applied per acre, or Apply 15 kg of compound fertilizer 15-15-15.
Medium-fertile soil can be applied to farmhouse manure 3 cubic meters, urea 20 kg, or 15-15-15 compound fertilizer 12 kg. High-fertility soil can be applied to farmer's fertilizer of 2.5 cubic meters and urea of ​​15 kilograms. Urea is more effective when used in top dressing. Compound fertilizer is better with base fertilizer.
Recommended reading: How to make corn stalks into pollution-free farmyard manure
In addition to feeding cattle, corn stalks can be used to make pollution-free farmyard manure. In order to ensure the quality of corn straw fertilizer, the following points should be noted in the process of stacking:
First, do a good job of corn stalk treatment. The corn stalks are first cut into 3 to 4 cm long, and can also be pulverized by a pulverizer, soaked with excrement and urine, so as to be saturated.
Second, the ratio of raw materials should be appropriate. It is crucial to compost corn stalk fertilizer and improve the ratio of fertilizer efficiency raw materials. Chopped corn stalks, soil, livestock manure, human excrement, prepared at a ratio of 6:1:2:1, mixed uniformly and then subjected to heap fermentation. The ratio of straw to water is preferably 1:3.
Third, strictly control the temperature inside the reactor. The temperature during fermentation should be controlled at 50 ° C ~ 60 ° C, which is most beneficial to the microbial decomposition of fiber bacteria activity.
4. After dumping for about 10 days after the stacking, it will fall twice, and then every 7 days, it will be poured 3~4 times.
5. Adjust the acidity in the heap in time. The microorganisms in the reactor are suitable for activities under neutral and slightly alkaline conditions. When the acidity is too large, a small amount of lime or grass ash may be added in an appropriate amount. The corn stalk fertilizer thus piled up can reach the quality standard after 25 to 30 days.
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