Yangchun March, pink and green. The 10,000-mu winter jujube in the Dongying estuary is about to sprout. How to improve the quality of winter jujube is an urgent problem for the farmers. On April 1st, the Rural People’s Daily and the “Tiancao†group jointly organized the “Three Rural Areas†Huimin Science and Technology Activities, which came to Dongbajing Village, Xinhu Town, Hekou District, Dongying City, and sent a lot of content to the farmers here. Science and technology dinner. At the event, Cheng Pengli, an agronomist of the Tianji Group Agrochemical Service Center, who is a graduate of the Agricultural Nutrition University of China Agricultural University, wrote on the blackboard while speaking, explaining the steps and methods of precise fertilization for the local jujube farmers. Fertilization has a deeper understanding and a clear understanding of the choice and application of fertilizers.
Winter jujube should be applied less with nitrogen fertilizer and more potassium fertilizer
"K is the nutrient element necessary for the high yield and quality of winter jujube, which is closely related to the disease resistance and fruit quality of winter jujube." At the beginning of the lecture, Cheng Pengli's words attracted a lot of attention.
Cheng Pengli introduced that plant growth is mainly divided into three stages: vegetative growth stage, advancing stage and reproductive growth. The nutrients required for each stage are different. Take winter jujube as an example: the whole growth process of winter jujube requires 0.5 kg of nitrogen, 0.2 kg of phosphorus pentoxide, 0.3 kg of potassium, 0.1 kg of calcium, 0.05 kg of magnesium, and 0.03 of iron per 1000 kg.
Cheng Pengli also stressed that 17 elements (C, H, O, S, Ca, Mg, Fe, Mn, Cu, Zn, Mu, Cl, Ni) such as nitrogen, phosphorus and potassium are the most important in crop growth and yield formation. Foundation. Winter jujube wants to get high yield, jujube farmers need to re-recognize what is precise fertilization.
In addition to the local conditions, precision fertilization should be tailored to crop conditions. Due to the three principles of fertilizer production, four small principles should be emphasized according to the needs of crops: accurate time, reasonable location, suitable nutrients, suitable fertilization. the amount.
“The essential nutrients are equally important in the plant regardless of the quantity. The special function of any nutrient element cannot be replaced by other elements.†At the meeting, Cheng Pengli said that fertilizers provide essential nutrients or changes in plants. Soil properties, substances that enhance soil fertility. When jujube farmers are fertilizing, they must change the original fertilization mode. It is more important to use proper fertilizer for fertilization than how to apply fertilizer.
Nitro compound fertilizer is more easily absorbed by crops
During the lecture, Cheng Pengli focused on the role of nitro-compound fertilizer. He introduced that nitro-compound fertilizer is a high-concentration compound of nitrogen, phosphorus and potassium produced by using ammonium nitrate as a nitrogen source and adding phosphorus, potassium and other compound fertilizer raw materials. fertilizer. The product contains both nitrate and ammonia. The main products are ammonium nitrate, ammonium nitrate and potassium. Compared with the traditional compound fertilizer, the nitro compound fertilizer has the advantages of quick effect, high absorption rate and anti-soil compaction.
Compared with urea, the nutrient loss is less, and the urinary nitrogen (amide nitrogen) can be absorbed by the crops after it becomes ammonium nitrogen and nitrate nitrogen. In the process of transformation, part of the uranium nitrogen is lost, causing fertilizer. The loss has polluted the ecological environment. Nitrate nitrogen can be directly absorbed by the roots of the crop without secondary transformation.
Cheng Pengli introduced that with the support of national policies and the development of technologies such as ammonium nitrate modification, the production and application of nitro-complex fertilizers in China have been greatly developed and the application prospects are broad. The current nitro compound fertilizers mainly include: nitrophosphate fertilizer, phosphorus and potassium nitrate fertilizer, calcium ammonium nitrate, ammonium nitrate phosphate.
Cheng Pengli emphasized that the nitro compound fertilizer has comprehensive nutrients, not only containing nitrogen, phosphorus and potassium, but also containing trace elements and rare earth elements. The fertilizer is fast, and the nitrate nitrogen in nitrogen should not be fixed by the soil, and can quickly reach the surface of the root and be absorbed by the crop.
In addition to the demand for NPK, the demand for calcium is also higher than that of other crops. In addition to containing 9% of calcium, magnesium, zinc, iron, manganese and other trace elements, Tianji nitrite-type compound fertilizer In addition, each pack of Tianji compound fertilizer also contains more than 30 grams of rare earth nitrate, which not only can alleviate the problems of soil compaction and soil acidification caused by improper fertilization, but also greatly improve the comprehensive absorption capacity of crops. The ability to resist disease, stress, and lodging is very helpful." Cheng Pengli said.
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