Method for preparing paddy rice special-purposed fertilizer with paddy rice straws

Abstract

The invention discloses a method for preparing a paddy rice special-purposed fertilizer with paddy rice straws. The method comprises the following specific steps: (1) paddy rice straws left after harvesting are collected, and are cut into sections with length of 2-3cm; the cut straw is subjected to a water spraying treatment, wherein 1.5-1.8kg of water is sprayed to every 10kg of paddy rice straw; (2) wet straw sections are subjected to a tumbling treatment in a tumbling machine, wherein vacuuming is carried out every 9-10min during tumbling, and tumbling is carried out for 15min after each vacuuming; (3) the tumbled paddy rice straw is delivered to a drying device, and continuous drying is carried out for 30-50min under a temperature of 45-55DEG C; (4) the dried paddy rice straw is crushed; the crushed paddy rice straw is sieved with a 80-100-mesh sieve, such that straw powder is obtained; the straw powder is placed in a stainless steel container, and is diluted with water; the mixture is pumped into a centrifugal spray drying tower, and spray drying is carried out with the centrifugal spray drying tower; the dried material is collected, such that instant straw powder is obtained; (5) the instant straw powder is used for granulation or as a filling material, such that the paddy rice special-purposed fertilizer can be prepared.

Description

Technical field [0001] The invention relates to the technical field of fertilizers, in particular to a method for preparing special fertilizer for rice by using rice straw. Background technique [0002] Rice is native to tropical Asia. After being widely planted in China, it gradually spread to all over the world. According to different methods, rice can be divided into indica and japonica rice, early and mid-late rice, glutinous rice and non-glutinous rice. Chinese scientist Yuan Longping has made great contributions to the research of hybrid rice and is known as the "father of hybrid rice." Rice grains are called rice or rice after they are hulled. Nearly half of the world's population feed on rice. There are many ways to eat rice, including rice, rice porridge, rice cakes, rice cakes, rice noodles, rice wine, etc. In addition to being edible, rice can also be used for brewing, sugar making, and industrial raw materials. Rice husks and rice straws also have many uses. The ...

AI Technical Summary

Problems solved by technology

In the prior art, rice seedlings are rarely used, and are generally crushed and returned to the field or used for combustion for power generation. The organic elements contained in the direct return to the field cannot be absorbed by the growth of rice, and the utilization rate of calorific value such as combustion for power generation is also low. Not high, low economic benefit