A kind of rice water-saving irrigation method

A rice and water layer technology, applied in the agricultural field, can solve the problems of difficult monitoring of soil moisture, instantaneous soil moisture status, soil type limitation, technical difficulty and other problems, and achieve the effect of easy mastery, simple use method and low price

Active Publication Date: 2017-03-08
YANGZHOU UNIV
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problems that the measurement index of soil moisture in the current rice water-saving irrigation method is difficult to monitor the instantaneous soil moisture status, limited by soil type, high cost and technically difficult

Method used

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  • A kind of rice water-saving irrigation method
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Experimental program
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Effect test

Embodiment 1

[0030] Embodiment 1: The making of the PVP pipe of measuring soil buried water depth

[0031] (1) Select the PVP pipe whose inner diameter is 19cm and outer diameter is 20cm, and the length of PVP pipe is respectively 32cm, 37cm and 42cm, which are respectively used for the soil of sandy soil, loam and clay;

[0032] (2) Start drilling at 15cm from the top of the upper end of the PVP pipe. The distance between the two holes is 4cm vertically and 3cm horizontally.

[0033] (3) For the convenience of observing the depth of buried water in the soil, for a 32cm-long PVP pipe used in sandy soil, start from the first row of holes at the top, from top to bottom, open holes at 6cm, 8cm, 10cm, 12cm and 15cm respectively, and Mark the corresponding position on the inside of the PVP pipe; for a 37cm-long PVP pipe used in loamy soil, start from the first row of holes at the upper end, from top to bottom, make holes at 8cm, 10cm, 12cm, 15cm and 20cm respectively, and in the Mark the corre...

Embodiment 2

[0034] Embodiment 2: Rice efficient water-saving irrigation method

[0035] In Yangzhou and Lianyungang from 2013 to 2014, sandy soil, loamy soil and clay soil were selected, and japonica rice varieties were purchased from Yangzhou Seed Company (for Yangzhou pilot planting) and Lianyungang Seed Company (for Lianyungang pilot planting) Lianjing 7, planted in the field, was tested with high-efficiency water-saving irrigation methods for rice, and the local conventional irrigation methods were used as controls.

[0036] Efficient water-saving irrigation methods:

[0037] Before Lianjing 7 was transplanted, PVP pipes were installed in the field. From transplanting to turning green, keep a 2-3cm water layer in the field; from turning green and live trees, observe the water depth in the PVP pipe once a day from 10:00 to 12:00 during the soil drying period. According to the water depth of the PVP pipe, that is, the soil buried water depth (see Table 1) determines whether irrigation...

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Abstract

The invention provides a rice water-saving irrigation method. The method is to monitor the soil buried water depth of rice planted in different soil types at each growth stage through a monitoring device, and use the appropriate soil buried water depth as an irrigation index to determine the amount of irrigation water, so that the water supply and the water demand for rice growth and development can be determined. consistent. The invention solves the problems that the measurement index of soil moisture in the current rice water-saving irrigation method is difficult to monitor the instantaneous soil moisture status, is limited by soil type, has high cost and great technical difficulty, and realizes the synergistic improvement of yield and water use efficiency.

Description

technical field [0001] The invention belongs to the technical field of agriculture, and in particular relates to a water-saving irrigation method for rice. Background technique [0002] Global agriculture in the 21st century faces two major challenges: one is the need to increase food production to meet population growth, and the other is the need to deal with the dwindling water resources while increasing food production. Rice is one of the most important food crops in the world, providing 35% to 60% of dietary calories for about 3 billion people. Rice is also the crop with the largest water consumption. In Asia, rice irrigation accounts for about 80% of agricultural water use (Bouman et al. 2001, 2007). With the growth of world population, the development of cities and industries, the change of global climate and the aggravation of environmental pollution, water resources for crop irrigation are becoming increasingly scarce, which seriously threatens the development of cr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G16/00A01G25/00A01G22/22
CPCA01G22/22A01G25/00
Inventor 杨建昌许更文张建华王志琴
Owner YANGZHOU UNIV
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