Fertilizer special for paddy rice

Abstract

A special fertilizer for paddy rice is prepared from N fertilizer, P fertilizer and zinc sulfate through mixing and granulating. It contains N (17-20%), P2O5 (7-10%) and Zn (0.22-1.1%). Its advantages are durable fertility, and high utilization rate.

Description

technical field [0001] The invention relates to the field of mixed fertilizers in agricultural production, in particular to a special fertilizer for rice. Background technique [0002] At present, rice fertilization is mostly based on conventional elemental fertilizers such as urea, ammonium bicarbonate, and diammonium phosphate. The use of these elemental fertilizers has brought serious problems in agricultural production, such as partial application of chemical fertilizers and unbalanced nutrient supply, and cannot fully meet the needs of farmers. Nutrients required at various stages of rice production. If too much nitrogen fertilizer is applied, the rice seedlings will mature late, the vegetative growth cycle will be prolonged, the reproductive growth time will be delayed, they will not mature normally, and they will be prone to lodging, and various diseases, especially rice blast, will be serious; Zinc imbalance inhibits the absorption of zinc by rice, and leads to the ...

AI Technical Summary

Problems solved by technology

[0002] At present, rice fertilization is mostly based on conventional elemental fertilizers such as urea, ammonium bicarbonate, and diammonium phosphate. The use of these elemental fertilizers has brought about serious problems in agricultural production, such as partial application of chemical fertilizers and unbalanced nutrient supply, and cannot fully meet the needs of farmers. Nutrients required at various stages of rice production

If too much nitrogen fertilizer is applied, the rice seedlings will mature late, the vegetative growth cycle will be prolonged, the reproductive growth time will be delayed, they will not mature normally, and they will be prone to lodging, and various diseases, especially rice blast, will be serious; if too much phosphorus fertilizer is applied, it will easily cause phosphorus, Zinc imbalance inhibits the absorption of zinc by rice, and leads to the proliferation of algae plants such as moss in rice fields, affecting the normal growth of rice seedlings

The Chinese patent announcement number is CN1112100A, and the disclosure date is November 22, 1995. It discloses a special chemical fertilizer for rice. The seedling fertilizer and ear fertilizer used in the growth period, each of these two kinds of fertilizers is a mixture of different elemental fertilizers. The seedling fertilizer must be used within one week before and after rice transplanting, while the ear fertilizer must be used within one week before and after rice transplanting. For the use in the young ear differentiation period, farmers must use it strictly in accordance with the specified period, so the process of using it is cumbersome and very troublesome

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