Method for reducing application and increasing efficiency of chemical fertilizers for corn based on water and fertilizer regulation of vicia villosa

A technology of sweet potato and corn, which is applied in the field of corn chemical fertilizer reduction and efficiency enhancement based on sweet potato water and fertilizer regulation, which can solve the problems of not paying attention to the management of green manure, water and fertilizer, affecting the fertility of fertilization, and the decline of fresh grass yield.

Pending Publication Date: 2020-10-20
NANJING AGRICULTURAL UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In actual agricultural production, the planting and management of dryland green manure such as sweet potato is extensive, and basically no watering and no fertilization are applied, which will easily lead to a decrease in the yield of fresh grass, which in turn will affect the fertility of the fertilized soil
Traditional management techniques do not pay attention to the water and fertilizer

Method used

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  • Method for reducing application and increasing efficiency of chemical fertilizers for corn based on water and fertilizer regulation of vicia villosa
  • Method for reducing application and increasing efficiency of chemical fertilizers for corn based on water and fertilizer regulation of vicia villosa
  • Method for reducing application and increasing efficiency of chemical fertilizers for corn based on water and fertilizer regulation of vicia villosa

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The present embodiment is based on the corn chemical fertilizer reduction and efficiency-enhancing method based on the control of sweet potato water and fertilizer, which specifically includes the following steps:

[0023] (1) In October 2018, sow light-leaved sweet potato, and apply 42kg / hm before sowing 2 N and 45kg / hm 2 P 2 o 5 As a base fertilizer for sweet potato;

[0024] (2) On February 2, 2019, water for overwintering sweet potatoes, with a water consumption of 750m 3 / hm 2 ;

[0025] (3) On March 14, 2019, the water used to irrigate the sweet potato turns green, with a water consumption of 450m 3 / hm 2 ;

[0026] (4) In April, pulverize and overturn the sweet potato, and decompose;

[0027] (4) Sow corn in May, apply 54kg / hm before sowing 2 N, 90kg / hm 2 P 2 o 5 and 105kg / hm 2 K 2 O is used as corn season base fertilizer;

[0028] (5) Apply 81kg / hm at the seedling stage of corn 2 N as a top dressing;

[0029] (7) Apply 135kg / hm at the bell mout...

Embodiment 2

[0032] A method for reducing fertilization and increasing efficiency of corn based on the regulation of water and fertilizer by sweet potato mainly includes the following steps:

[0033] (1) In October 2018, sow light-leaved sweet potato, and apply 42kg / hm before sowing 2 N and 45kg / hm 2 P 2 o 5 As a base fertilizer for sweet potato;

[0034] (2) In April, pulverize and overturn the sweet potato, and decompose;

[0035] (3) Sow corn in May, apply 37.2kg / hm before sowing 2 N (or reduce 30% application rate with respect to embodiment 1), 45kg / hm 2 P 2 o 5 (or reduce the application rate of 50% with respect to embodiment 1) and 105kg / hm 2 K 2 O is used as corn season base fertilizer;

[0036] (4) Apply 55.8kg / hm at the seedling stage of corn 2 (or reduce the application rate of 30% relative to embodiment 1) N as a topdressing;

[0037] (5) Apply 135kg / hm at the bell mouth stage of corn 2 N as secondary topdressing;

Embodiment 3

[0039] (1) In October 2018, sow light-leaved sweet potato, and apply 42kg / hm before sowing 2 N and 45kg / hm 2 P 2 o 5 As a base fertilizer for sweet potato;

[0040] (2) In April, pulverize and overturn the sweet potato, and decompose;

[0041] (3) Sow corn in May, apply 54kg / hm before sowing 2 N, 90kg / hm 2 P 2 o 5 and 105kg / hm 2 K 2 O is used as corn season base fertilizer;

[0042] (4) Apply 81kg / hm at the seedling stage of corn 2 N as a top dressing;

[0043] (5) Apply 135kg / hm at the horn mouth stage of corn 2 N as secondary topdressing;

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Abstract

The present invention discloses a method for reducing application and increasing efficiency of chemical fertilizers for corn based on water and fertilizer regulation of vicia villosa. The method comprises the following steps: sowing vicia villosa in October every year and applying a nitrogen fertilizer and a phosphate fertilizer as base fertilizers for a vicia villosa season; irrigating vicia villosa overwintering water in February of the following year; irrigating vicia villosa sprouting water in March; crushing, turning and pressing the vicia villosa and conducting decompose in April; sowingcorn in May and applying nitrogen, phosphate and potassium fertilizers as a base fertilizer for a corn season before sowing; applying a nitrogen fertilizer as a topdressing during a corn seedling stage; and applying a nitrogen fertilizer as a secondary topdressing in a corn trumpet stage. The method conducts proper irrigation and fertilization in the vicia villosa season, can significantly increase biomass and nutrient accumulation of the vicia villosa, can significantly increase yield and quality of the subsequent crop corn after turning and pressing the green fertilizer, and can activate soil nutrients, increase soil nutrient content and improve physical and chemical properties of soil.

Description

technical field [0001] The invention relates to a crop rotation method, in particular to a method for reducing chemical fertilizer application and increasing efficiency of corn based on water and fertilizer regulation of sweet potatoes. Background technique [0002] Potatoes are widely used in crop rotations such as corn, rice, and tobacco. In actual agricultural production, the cultivation and management of green manure in dry land such as sweet potato is extensive, and basically no watering and no fertilization are applied, which can easily lead to a decrease in the yield of fresh grass, which in turn affects the fertility of fertilized soil. Traditional management techniques do not pay attention to the water and fertilizer management of green manure. So far, the dryland water and fertilizer management technology for green manure is relatively lagging behind. The law of nutrient and water demand of dryland green manure is not clear. In the long run, it will affect the func...

Claims

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Application Information

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IPC IPC(8): A01G22/20A01G22/40A01C21/00C05G1/00
CPCA01C21/005A01G22/20A01G22/40C05B1/02C05C9/00C05D1/02
Inventor 焦加国徐璐瑶王媛媛赵彩衣董青君胡锋刘满强徐莉李辉信
Owner NANJING AGRICULTURAL UNIVERSITY
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