Straw returning technology (5)

V. How to make and use straw Fertilizer The straw fertilizer production method is mainly used for 7 pieces of straw, 1 piece of human waste, 2 pieces of livestock and poultry urine, and an appropriate amount of horse dung or grain. At the beginning of March, the prepared straw was chopped or crushed into pieces of about 3 cm, and human feces and urine, livestock and poultry urine, and comminuted straw were thoroughly mixed and mixed at a volume ratio of 1:2:7. Pouring enough water (water content of the material is appropriate from 60% to 70%, that is, when the water is added to the hands to form a mass, it is advisable to reach the state that it is scattered). Then pile up the prepared griddles and ignite the leeward sunspots. Draw horse dung with hot water and shake them well (at a temperature of 40°C or more). Cover them with the ignited griddles and make them a warm heart. (hot spots), then cover the strewn straws on the horse dung and layer them into a round heap. The stack height should not be less than 1.5 meters. After stacking, attention should be paid to management to prevent humans and animals from trampling and observing the stack temperature. The stack temperature is controlled between 50-60°C and the maximum temperature cannot exceed 70°C. Because this temperature range is conducive to microbial activity, speed up the decomposition of straw, but also can kill bacteria, eggs, reduce the volatilization of ammonia. This piled rot 7-10 days, the temperature reached 60-65 °C, this time can be dumped, and then poured every 7 days or so, a total of 3-4 times, about 35-45 days can be good fermentation. The good straw fertilizer has the characteristics of black, chaos and smell, black sap and ammonia odor, soft and elastic when wet, and brittle and easy to break when dry. Pay attention to the following 4 points in the straw fertilizer production process. First, if straw stalks are made at the end of March or early April, in order to achieve good fermentation before planting, warming up the heart should be adopted, and the top of the pile should be covered with plastic film and some people's excrement and livestock dung should be added to make the stalks as soon as possible. Fermentation. The second is that in the process of composting, people can't go step on, and they can't pour dirt into straw fertilizer and press it with soil, otherwise it is not easy to ferment. Third, after stacking, attention should be paid to observation. When found that the fat heap is air-frozen and frosted, timely cover it with the mixed straw, which is conducive to heat preservation. Fourth, the straw fertilizer should not be used excessively or badly so as not to affect its fertilizer efficiency. Straw fertilizer is generally used as a base fertilizer or seed fertilizer, generally consuming 1500-2000 kg per 666.7 m2.

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