Dual spiral fertilizing part

Abstract

The invention relates to a dual spiral fertilizing part, and belongs to the technical field of agricultural machinery. The fertilizing part comprises a main fertilizer discharge pipe, which is vertically arranged and has a hollow structure. The top of the main fertilizer discharge pipe is provided with a fertilizer inlet. The bottom of the main fertilizer discharge pipe is provided with a fertilizer outlet. The lateral wall of the main fertilizer discharge pipe is provided with an upper row of through holes and a lower row of through holes. The upper through holes are fixedly connected to upper fertilizer discharge pipes, and the lower through holes are fixedly connected to lower fertilizer discharge pipes. The upper fertilizer discharge pipes and the lower fertilizer discharge pipes are provided with layered fertilizer discharge ports so as to form uniform fertilizer areas in regions with two different heights under soil, the seedling burnt caused by local excess fertilizers is avoided, the nutrient needs of the roots are satisfied, and the fertilizing part also has a certain topdressing function.

Description

technical field [0001] The invention relates to a double-layer spiral fertilization part, which belongs to the technical field of agricultural machinery. Background technique [0002] Fertilizers are important means of agricultural production and food for crops. Chemical fertilizers play an irreplaceable role in promoting the development of crops and agricultural production, and the application of chemical fertilizers contributes more than 40% to the increase in grain production. However, there are many problems, such as the high application rate per mu, which is about 2.5 times the world average level; unbalanced fertilization, especially excessive fertilization of horticultural economic crops such as vegetables and fruits; unbalanced fertilization structure, heavy chemical fertilizers, light organic Fat. The resulting excessive application of chemical fertilizers and blind application have significantly led to an increase in crop planting costs, pollution of the soil env...

AI Technical Summary

Problems solved by technology

However, the uniformity of artificial spreading is poor and the labor is much used; the method of rotary tillage and scattering after mechanized application is used for basal fertilizer application, and the fertilizer application amount is large, but the utilization rate is low; while the fertilizer is concentrated near the root system of the crops in the method of sowing or transplanting side strips , the fertilizer utilization rate is high, but because the fertilization pipe goes deep into the soil, it is easy to cause the soil to block the fertilizer outlet, and it may also cause seedling burning due to excessive concentration of fertilizer

[0004] The Chinese patent with the application number CN201610638205.1 discloses a single-screw fertilizer spreader, which mainly improves the transmission mechanism of the vertical screw fertilization parts, and can be kept upright during operation and lifted as needed during transfer. , but its fertilization parts cannot complete the controllable layered fertilization

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