Biogas slurry is fully fermented, and it is rich in nutrients needed by many crops. Therefore, it is extremely suitable for external root fertilization, and its effect is better than chemical fertilizers. Crops and fruit trees entering the flowering period, booting stage, filling stage, and fruit expansion period can be sprayed with biogas slurry, which is conducive to flower bud differentiation, flower protection and fruit preservation, and the effect of yield increase is obvious, and fruit weight gain is fast and good. The relevant practical techniques are now described as follows for reference by farmers:
First, the technical points:
1. Biogas slurry: Biogas digesters collected from normal gas production for more than one month, clarified and gauze filtered to prevent plugging of sprayers.
2, fertilization period: crop germination pumping period (pumping period), flowering period (booting phase, beginning of fruit period), fruit enlargement period (grouting period), disease and pest outbreak period. Spray once every 7-10 days.
3. Fertilization time: After the dew is dry (about 10:00) in the morning, it is advisable to use it in the summer evening. No heat and no rain before noon.
4. Concentration: According to the concentration of biogas slurry, application of crops and seasons, and temperature, the general principle is: seedlings, young leaves, 1 part of biogas slurry plus 1-2 parts of water; summer high temperature, 1 part of biogas slurry plus 1 part of water When the temperature is low and when it is an old leaf, it is not necessary to add water.
5, dosage: depending on crop varieties and growth may be, generally 40-100 kg per 667 square meters.
6, can be single, but also with chemical fertilizers, pesticides, growth regulators and other mixed applications. When spraying, the back of the sprayed leaves is mainly used to facilitate crop absorption.
Second, the application method
1, biogas spray fruit trees: From the beginning of the flowering period, combined with preserved fruit, 7-10 days once until the leaves before the fall. 1 part of biogas slurry plus 1 part of fresh water, effect: keep flowers and preserve fruit, promote consistent fruit size, good gloss, and consistent maturity. After fruit picking, it can also be adhered 3 to 4 times, which is conducive to flower bud differentiation and enhance the ability of the tree to resist cold.
2. The biogas slurry is sprayed with mushrooms. After the mushroom is hatched, 500 grams per square meter is added, and the biogas slurry is added with 1 to 2 times of fresh water and sprayed once a day to increase the quality of the mushroom and increase the yield. The increase rate is 37% to 140%.
3, spraying slurry of watermelon: the beginning of the extension of vines, 10 kilograms per acre of biogas slurry to add 30 kilograms of fresh water; early fruit period, every 15 kilograms of biogas slurry to add 30 kilograms of water; late 20 kilograms of biogas slurry plus 20 kilograms of water. By spraying, it can increase the resistance to disease, increase production, and there is a wilt disease, the effect is more significant.
4. Biogas slurry spraying: The leaf stage starts and ends before the leaves fall, once every 7-10 days. The ratio of biogas slurry to water is 1:1. Effect: Consistent fruit enlargement, can increase production by about 10%, and treat diseases and pests. (Bamboo)