Controlled-releasing compounding fertilizer used specially for potato planted in winter rice field

A compound fertilizer and potato technology, which is applied in the field of controlled-release compound fertilizer for potato slack rice fields, can solve the problems of difficulty in topdressing, high nutrient in the early stage, and insufficient nutrient in the later stage, and achieve the effect of improving fertilizer utilization rate and reducing fertilization labor

Inactive Publication Date: 2006-04-12
湖南长江生物能源有限公司
View PDF1 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the current large-scale application of plastic film mulching cultivation in potato production has played a positive role in improving ground temperature, early market, reducing weed damage, and increasing yield. Generally, the fertilizer is applied at one time before covering the film, and no topdressing will be done later, which will easily cause the problem of excessive nutrients in the early stage and insufficient nutrients in the later stage of crop growth.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0007] The present invention will be further described below in conjunction with embodiments.

[0008] Weigh 200kg of urea (containing N 46%), ammonium phosphate (containing P 2 O 5 44%, containing N 11%) 50kg, ordinary calcium (containing P 2 O 5 16%) 200kg, potassium sulfate (including K 2 O 55%) 400kg, the coating material sepiolite 110kg, sima stone 40kg, the above solid fertilizers are respectively crushed, granulated, dried and sieved, and are respectively wrapped into packages with the following release rates according to the known coating technology Film fertilizer particles: release 70% nitrogen, 30% phosphorus and 30% potassium within 90-100 days of sowing, and release 30% nitrogen, 70% phosphorus and 70% potassium within 30 days after sowing; then mix them Evenly, serve.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

A release-controlled compound fertilizer for planting potato in the rice field in the southern winter contains N, P2O5 and K2O in ratio of (2-3): (1-1.5): (4-5). Its preparing process includes such steps as pulverizing N, P and K fertilizers, granulating, drying, screening and coating film for controlling its release. Its advantage is proportional release of N, P and K by stages.

Description

Technical field [0001] The invention relates to a special controlled-release compound fertilizer for potato winter slack rice field, in particular to a special controlled-release compound fertilizer for potato winter slack rice field which is mixed with nitrogen, phosphorus and potassium fertilizers and is coated with a coating that can control the release rate of nutrients . Background technique [0002] The potato is highly adaptable and has a high yield. It is one of the four major food crops in the world. After harvesting rice in the rice cultivation areas in southern my country, a large number of winter fallow fields are left unused, which is particularly suitable for developing potato production. Therefore, the potato sown area has expanded rapidly in recent years. Potatoes have very strict nutrient requirements. There is a correlation between the above-ground stems and leaves and the underground tuber parts during the growth process. The growth of...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C05G1/00C05G3/08C05G3/90
Inventor 熊兴耀何长征刘明月
Owner 湖南长江生物能源有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products