Winter wheat-summer corn rotation one-time fertilizing emission reduction method

A technology for summer corn and winter wheat, applied in the field of agricultural fertilization, can solve problems affecting the stability and increase of grain production, aggravate environmental pollution, and low fertilizer utilization rate, achieve wheat yield quality, improve agricultural non-point source pollution, and improve soil structure , the effect of increasing yield and fertilizing the soil

Inactive Publication Date: 2017-08-18
INST OF AGRI RESOURCES & ENVIRONMENT SHANDONG ACADEMY OF AGRI SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, with the rapid advancement of rural urbanization, the labor force continues to move out, and the price of food is not high , No topdressing or topdressing methods are not used in p

Method used

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  • Winter wheat-summer corn rotation one-time fertilizing emission reduction method
  • Winter wheat-summer corn rotation one-time fertilizing emission reduction method

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Embodiment 1

[0038] A "one-time fertilization" emission reduction method of the winter wheat-summer corn rotation system of the present invention, the method determines the annual recommended application amount of nitrogen, phosphorus and potassium in the two-season rotation of winter wheat and summer corn according to the results of regional soil fertility research, Among them, the annual nitrogen input amount is 420 kg / hm in terms of N 2 , the annual phosphorus application rate is expressed as P 2 o 5 Calculated as 240 kg / hm 2 , the annual potassium application rate is expressed in K 2 O is calculated as 220kg / hm 2 ,details as follows:

[0039] The recommended application rates of nitrogen, phosphorus and potassium in winter wheat are: the nitrogen application rate is 180 kg / hm in terms of N 2 , among which, the organic fertilizer provides 30 kg / hm in terms of N 2 , the slow and controlled release nitrogen fertilizer provides 160 kg / hm in N 2 ;P 2 o 5 Calculated as 120 kg / hm 2 ...

Embodiment 2

[0055] A "one-time fertilization" emission reduction method of the winter wheat-summer corn rotation system of the present invention, the method determines the annual recommended application amount of nitrogen, phosphorus and potassium in the two-season rotation of winter wheat and summer corn according to the results of regional soil fertility research, Among them, the annual nitrogen application rate is 495 kg / hm in terms of N 2 , the annual phosphorus application rate is expressed as P 2 o 5 Calculated as 210 kg / hm 2 , the annual potassium application rate is expressed in K 2 O is calculated as 240kg / hm 2 ,details as follows:

[0056] The recommended application rates of nitrogen, phosphorus and potassium in winter wheat are: the nitrogen application rate is 245 kg / hm in terms of N 2 , among which, the organic fertilizer provides 50 kg / hm in terms of N 2 , the slow and controlled release nitrogen fertilizer provides 195 kg / hm in N 2 ;P 2 o 5 Calculated as 100 kg / hm...

Embodiment 3

[0072] A "one-time fertilization" emission reduction method of the winter wheat-summer corn rotation system of the present invention, the method determines the annual recommended application amount of nitrogen, phosphorus and potassium in the two-season rotation of winter wheat and summer corn according to the results of regional soil fertility research, Among them, the annual nitrogen application rate is calculated as N 520 kg / hm 2 , the annual phosphorus application rate is expressed as P 2 o 5 Calculated as 180 kg / hm 2 , the annual potassium application rate is expressed in K 2 O is calculated as 180kg / hm 2 ,details as follows:

[0073] The recommended application rate of nitrogen, phosphorus and potassium in winter wheat is: the nitrogen application rate is 250 kg / hm in terms of N 2 , in which, the organic fertilizer provides 60 kg / hm in terms of N 2 , the slow and controlled release nitrogen fertilizer provides 190 kg / hm in N 2 ;P 2 o 5 Calculated as 90 kg / hm 2 ...

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Abstract

The invention provides a winter wheat-summer corn rotation one-time fertilizing emission reduction method, and belongs to the technical field of farm fertilizing. The method considers the nutriment demand and allocation of two crops in one year. An organic fertilizer and a slow controlled-releasing nitrogenous fertilizer are mixed to be applied to winter wheat during N application of the winter wheat; and the fertilizing manner includes: smashing all the corn straw, returning the smashed straw to soil, performing rotary tillage, and applying the mixed fertilizer to the soil once. A slow controlled-releasing nitrogenous fertilizer provides N elements to summer corn, and is applied to the soil once with corn sowing on the primes of applying the sufficient organic fertilizer to the winter wheat. The times of field fertilizing is 2, labor forces can be greatly saved, soil disturbance is reduced, the emission of N2O is reduced, the use amount of the nitrogenous fertilizer is reduced by 14-25%, the yield of the two crops is increased by 400-500 kg/hm<2>, the average income is increased by 1400-1600 yuan/hm<2>, the fertilizer utilization rate is improved by 25-35%, labors can be saved by 30-45, and the emission of N2O is lowered by 25-35%.

Description

technical field [0001] The invention belongs to the technical field of agricultural fertilization, and relates to a wheat and corn fertilization method, in particular to a winter wheat-summer corn rotation system "one-time fertilization" emission reduction method. Background technique [0002] The North China Plain is the main grain production area in my country, with winter wheat / summer corn rotation as the main planting mode, and its total output is about 40% and 28% of the national total (Chen Baiming, 2003). However, In order to pursue high yield, excessive fertilization is serious, especially Nitrogen fertilizer . The survey shows that the annual nitrogen fertilizer consumption in this area exceeds 500kg N / hm 2 , while the average output is 11.5t / hm 2 (Ju Xiaotang et al., 2002; Cui Zhenling, 2005), far exceeding the nitrogen requirement for the average yield of winter wheat / summer maize (Zhao Rongfang et al., 2009). On the one hand, nitrogen fertilizer use efficie...

Claims

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Application Information

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IPC IPC(8): A01G1/00A01C21/00
CPCA01C21/00A01G22/00
Inventor 江丽华刘兆辉徐钰谭德水石璟王梅杨岩崔荣宗魏建林李国生
Owner INST OF AGRI RESOURCES & ENVIRONMENT SHANDONG ACADEMY OF AGRI SCI
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