Neurotrophic agent accelerating straw quick decomposition as well as preparation method and use thereof

Abstract

The invention relates to nutritional agent and the preparation method and application for accelerating the straw to rapid decompose. The preparation method for the nutritional agent adopts the weight parts of the material components as following: urea 1 to 10 shares, monopotassium phosphate 2 to 3 shares, sucrose 0.2 to 20 shares, bitter salt 0.3 to 0.4 share, micro-element solution 0.07 share and water 70 to 80 shares, wherein, the weight parts of the urea and the sucrose are in significant difference according to the classes of the returning straws. The material of the nutritional agent is common fertilizer and chemical raw material which are easy to obtain. The material does not need any special microbial inoculum, so the preparation method for the nutritional agent has the advantages of low price, simple preparation method, flexible range and application craft, short decomposition cycle and wide application range, and thus can be used both in field and turnrow and is suitable for field crops, such as corn and wheat.

Description

technical field [0001] The present invention relates to a nutrient for straw decomposing and its preparation method and application, in particular to a low-cost and high-efficiency straw decomposing nutrient that uses nutrients rich in nitrogen, phosphorus and potassium as main raw materials and does not add decomposing microbial agents. The invention relates to an agent, a preparation method and an application thereof, and belongs to the field of crop straw utilization. Background technique [0002] According to the statistics of relevant departments, my country produces as many as 660 million tons of crop straw every year, but the comprehensive utilization rate of straw is only 54.8%, of which about 91 million tons of straw are returned to the field, accounting for 15% of the total. At present, straw burning is common in rural areas. Straw burning not only easily causes fires, but also increases the number of suspended particles in the air, polluting the atmospheric envir...

AI Technical Summary

Problems solved by technology

[0004] However, there are many problems in straw returning to the field at present: First, due to the large amount of corn straw and the shallow rotary tillage, the root system of wheat seedlings grows in the soil layer where the straw is concentrated, and the straw is easy to cause "burning seedlings" during the early maturity process

Secondly, after the straw is directly returned to the field, because the decomposing microorganisms will consume a large amount of nitrogen, the crop yield in the field will not increase or even decrease.

Again, direct returning to the field will also affect the quality of wheat sowing

For plots with high corn yield, large amount of straw or poor crushing, it is difficult to ensure the basic number of seedlings by constant sowing, and it is necessary to increase the sowing amount or use special equipment, which greatly increases the cost

In addition, after the undecomposed corn stalks are directly returned to the field, they will be slowly oxidized in the soil, which will easily lead to a decrease in the availability of some trace elements in the soil, and will also produce some harmful substances to the crop roots.

[0005] Aiming at the adverse effects of direct return of straw to the next crops, Chinese patent document CN1163701A (96117707.1) provides a method to supplement trace elements in time and apply some disease prevention and treatment drugs in a targeted manner. Although this method saves labor and Yield increased, but the control effect on many sequelae after direct return of straw to the field is poor

Chinese patent document CN1294107A (99117337.6) has targetedly strengthened the control effect of the sequelae of straw returning to the field, but because it is used at the seedling stage of the next crop, it not only consumes a lot of labor, but also can cause poisonous effects on crops and inhibit its growth if improperly applied.

Chinese patent document CN1414093A (02133713.6) proposes to add compound microbial inoculum when directly returning to the field, which can accelerate the decomposition of straw, improve soil and improve crop quality, but due to the need to add additional microbial inoculum, it not only increases the agricultural cost, but also increases the cost of microbial inoculum. There are certain requirements for storage and use, and it is not easy for farmers to accept

Returning the straw to the field after decomposing is an economical and easy-to-operate method. The Chinese patent document CN1078491A (93101092.6) proposed the idea of ​​decomposing the straw first and then returning it to the field. Specific microbial agents, first, increase the cost, and second, increase the difficulty of operation, which is not conducive to farmers' mastery of application