"In addition to fertilizing techniques using organic fertilizer and green manure, straw returning, loose soil fertilization, and soil testing and formula fertilization can all increase soil fertility in orchards." Current Vice Chairman of Shandong Soil and Fertilizer Society, Shandong Province Soil Testing Formula Experts from the fertilization expert group, Professor Fang Fang of Qingdao Agricultural University pointed out.
Straw returning is the technique of using the crop's straw to crush it to a certain fineness and return it to the soil. Its main purpose is also to increase soil organic matter content. The amount of straw is about 1000 kg per mu; the length of straw is minced to 5 to 10 cm; to use nitrogen fertilizer at the same time, 100 kg of straw use 3 to 5 kg of ammonium bicarbonate; a certain amount of catalyst can be used to facilitate the decomposition of straw; straw Place the fruit tree under the tray, it is best to turn the straw to the ground.
Soil testing and formula fertilization is how to improve orchard soil fertility? The key influencing factors affecting the growth and development of crops can be found through soil testing and formula fertilization, and the fertilizer design can be targeted. However, one of the formula fertilizers is produced according to the crop, and the other is produced according to the soil. For example, if there are some crops that do not contain chlorine, you cannot use formula fertilizers containing chlorine. The combination of these two is now a problem. It is necessary to communicate with experts in the agricultural technology promotion department.
Soil fertility is mainly used in orchards with relatively low fertility levels and relatively poor physical properties, such as sandy lands, clay lands, and thin soil layers. In the future, we must pay attention to the quantity of the land and soil, and the land of the soil should be around 10 cm. In addition to the soil, it is also possible to use ripping or deep ploughing methods to deeply plow about 30 centimeters so that the soil can reach deeper tillage layers and improve the physical properties of the soil. However, Teacher Yan also said that this can only change the soil physical properties, and can not increase the soil's own fertility. In this process, it needs to combine the correct fertilization, so as to play the role of fertility orchard fertility.
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