Rationality Evaluation of Water Quota in Guizhou Province

Jiangli Zheng

1,2,*

, Xingpin Li

1,2

, Kang Zhang

1,2

, Zhipeng Ma

1,2

and Sen Wang

1,2

Pearl River Water Resources Research Institute, Pearl River Water Resources Commission, Guangzhou 510611, China

Key Laboratory of the Pearl River Estuary Regulation and Protection of Ministry of Water Resources,

Guangzhou 510611, China

Keywords: Quota Management, Agricultural Water Quota, Rationality Evaluation.

Abstract: Quota management is a basic system of water resources management stipulated by water law. According to

the technical requirements of water quota evaluation, the agricultural water quota in Guizhou Province was

evaluated. The results show that:(1)The three items of comprehensive evaluation meet the requirements of

rationality, so the rationality evaluation conclusion of agricultural water use quota in Guizhou Province is

"reasonable".(2)The gap between the water use level of rice in Guizhou Province and the quota value is small,

and the quota formulation is reasonable.(3)According to the water consumption data of corn, wheat, corn,

potato, rape and vegetables (Capsicum and Chinese cabbage) in Guizhou, there is a big gap between 50% of

the dry crop quota and the established quota standard, but the overall average deviation is 16.1%, which is in

a reasonable deviation range.

1 INTRODUCTION

Quota management is a basic system of water

resources management stipulated by water law, and it

is an important basis for water resources

demonstration, water intake permit, planned water

use, etc (Zhang, 2018). Strengthening water quota

management is helpful for sustainable utilization of

water resources. Foreign countries adopted water

quota management earlier after analyzing and

studying the demand for water consumption (Liu,

2017; Okamura et al., 1992; Blair et al., 1998; Mc

Affer et al., 1996; Maes, 1987). When managing the

water quota in France, based on the water law, six

River Basin Organizations in the whole country are

managed in a unified way and six water affairs

bureaus are established. The United Kingdom

manages water resources through the establishment of

the Ministry of environment. The United States,

Canada, Mexico, Japan and other countries have

generally adopted the form of quota management of

water resources, which is the inevitable requirement

of water resources management (Sanders, 1999;

Anwandter, 2002; Colenbrander, 1986; Aida et al.,

1998; Stephen, 1999; Qui, 2007).

In China, agricultural water consumption accounts for

more than 50% of the total water consumption.

However, by the end of 2019, 42 national standards

for high water consumption industrial quotas such as

thermal power generation and iron and steel complex

have been issued; Since 2014, four water-saving

technical specifications for service industry, such as

car washing and bathing, have been issued, which

stipulate the relevant requirements and quota

standards for water-saving in service industry;

Agricultural water quota is included in the water

quota of each province in China, but the national

standard of agricultural water quota is still lacking. In

2020, the Ministry of water resources issued seven

agricultural irrigation water quotas with the document

"notice on printing and distributing seven agricultural

irrigation water quotas including rice". In April 2015,

the water resources division of Ministry of water

resources of China issued the technical requirements

for water quota assessment. Therefore, taking the

agricultural water quota of Guizhou Province as an

example, the rationality evaluation standard is

determined. By comparing the difference between the

actual irrigation water consumption per mu and the

quota, the rationality of the agricultural water quota is

Zheng, J., Li, X., Zhang, K., Ma, Z. and Wang, S.

Rationality Evaluation of Water Quota in Guizhou Province.

DOI: 10.5220/0011965500003536

In Proceedings of the 3rd International Symposium on Water, Ecology and Environment (ISWEE 2022), pages 217-221

ISBN: 978-989-758-639-2; ISSN: 2975-9439

 2023 by SCITEPRESS – Science and Technology Publications, Lda. Under CC license (CC BY-NC-ND 4.0)

217

evaluated, which provides the basis for revising the

agricultural water quota and formulating the national

standard.

2 ESTABLISHMENT OF

AGRICULTURAL WATER

QUOTA IN GUIZHOU

PROVINCE

According to the water quota of Guizhou Province

(DB52 / T 725-2019), the water quota of agricultural

irrigation, forestry, animal husbandry and fishery is

divided into 4 categories, 12 medium categories and

707 quota values. Compared with the "industrial

water quota of Guizhou Province" (DB52 / T 725-

2011), the forestry quota is added, and the quota is

divided into level I (advanced value) and level II

(general value).

Agricultural basic irrigation water quota includes

8 categories, 23 crops, 642 quotas. Forestry mainly

formulates a kind of index, namely forest seedlings,

with a total of 30 index values (see table 1).

Table 1: Release of agricultural irrigation water quota in

Guizhou Province.

industry classification Crop name

Quantity

of issued

quota

Agriculture

Grain planting

middle-season rice 30

Wheat 30

Corn 30

Bean, oil and potato

cultivation

rape 30

potato 30

Cotton, hemp, sugar

tobacco planting

flue-cured tobacco 30

Cultivation of

vegetables, edible

fungi and horticultural

crops

Chinese Cabbage 30

Pepper 30

Houttuynia cordata

Thunb

Flowers and

horticultural crops

Fruit planting

Grape 30

pitaya 12

Passion fruit 12

kiwifruit 30

Peach and pear 30

citrus 30

Cultivation of nuts,

oilseeds, spices and

beverage crops

Walnut 30

Tea 30

Traditional Chinese

medicine planting

Dendrobium 30

banxia 18

Bletilla striata 30

Radix

Pseudostellariae

Grass planting and

mowing

Grass planting

(forage grass)

Forestry

Tree breeding and

seedling raising

Tree seedling 30

total 9 categories 24species 672

3 EVALUATION CRITERIA

According to the technical requirements of regional

water quota evaluation, the rationality evaluation of

agricultural water quota includes four aspects: first,

whether the irrigation water quota is formulated

according to the division of the province; Second,

whether it is formulated according to different

guarantee rates; Third, whether to revise regularly or

timely; Fourth, whether the water quota is reasonable

compared with the current water level.See table 2 for

the classification standard of rationality evaluation.

Table 2： evaluation criteria for rationality of agricultural

water quota.

classification easy reasonable strict

assessment 2 or less

3 satisfied 4 satisfied

4 ASSESSMENT PROCESS AND

RESULTS

The irrigation water consumption of rice in Guizhou

Province is the largest, and the proportion of irrigation

water in paddy field reaches 96.5%. Therefore, the

water consumption level of 80% hydrological year

type (75% hydrological year type in neighboring

provinces) of irrigation area with rice as the main crop

is mainly collected for irrigation quota evaluation.

Although there is not much irrigation water for dry

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218

crops, it accounts for a large proportion of the crop

planting area in Guizhou. Wheat, corn, potato, rape

and vegetables (hot pepper and Chinese cabbage) are

selected as representative crops for evaluation.

4.1 Rice

According to table 3, the difference between the net

water consumption index of rice in 16 sample

irrigation areas and the established quota is less than

20%.

Table 3: Water consumption statistics of sample irrigation areas in Guizhou Province.

Name of irrigation area

Agricultural

irrigation

Division

Rainfall

frequency

Actual net water

consumption

index (m

/hm

)

Water consumption quota of

Guizhou Province

Minimum

difference

etween actual

and quota

Adjustment

coefficient

Quota value

/hm

)

Heshandun Irrigation District Ⅰ 81.50% 3675 1.04 4155~4785 11.8%

Hongyan Irrigation District Ⅰ 78.60% 3765 1 4005~4605 6.0%

Guoshui Irrigation District Ⅰ 84.50% 4275 1 4005~4605 0%

Xiaoshipo Irrigation District Ⅰ 75.50% 3165 0.96 3840~4425 17.7%

Momenshan Irrigation District Ⅱ 79.20% 5313 1.04 4530~5250 1.1%

Hongzhou Wuyi Irrigation District Ⅱ 79.20% 5487 1 4350~5055 8.5%

Cuili Irrigation District Ⅱ 80.30% 4698 1 4350~5055 0%

Tuanjie Irrigation District Ⅲ 74.60% 4725 1.04 4470~5145 0%

Minle Irrigation District Ⅲ 78.60% 5722.5 1.04 4470~5145 11.2%

Xiluohe Irrigation District Ⅲ 86.60% 3645 1 4305~4950 15.2%

Hongqi Irrigation District Ⅲ 83.50% 3675 1 4305~4950 14.6%

Jinqian Irrigation District Ⅳ 86.6% 3675 1.04 3585~4155 0%

Fukuo Irrigation District Ⅳ 86.6% 3378 1.04 3585~4155 5.8%

Kewang Irrigation District Ⅴ 82.80% 3810 1 3795~4350 0%

Mulanghe Irrigation District Ⅴ 81.20% 3390 1.04 3945~4530 14.1%

Xingxihu Irrigation District Ⅴ 81.20% 3390 1.04 3945~4530 14.1%

4.2 Dry Crop

The main dry crop varieties planted in Guizhou

Province are wheat, corn, potato, rape and vegetables.

Wheat, corn, potato, rape and vegetables (Capsicum

and Chinese cabbage) are selected as representatives

of dry crops for irrigation quota evaluation.

According to the results of Xiuwen County

Central Experimental Station in Guizhou Province

from 2016 to 2017, the rainfall in 2017 was 239.4mm,

which was a moderately dry year (the rainfall

frequency was about P = 74%). The results of

comparing the net irrigation quota of wheat, corn,

potatoes and vegetables with the water quota of

Guizhou Province (db52/T 725-2019) are shown in

Table 4. The average net quota of corn in dry year is

1695m3/hm2, which is 5.6% higher than the quota

standard. The net quota of wheat, rape, potato and

pepper is 23% - 26.8% lower than the quota standard.

The average deviation of dry crop net quota and quota

standard is 16.1%.

Rationality Evaluation of Water Quota in Guizhou Province

219

Table 4: Comparison table of dry crop test results and standard irrigation quota.

Typical

irrigation

area

crop

Year Type of

precipitation

Test quota

Water consumption quota of

Guizhou Province

Minimum

difference

etween actual

and quota

net water

consumption

index (m

/hm

)

Condition

facilities

Quota value

/hm

)

Condition

of facilities

Xiuwen

County

Central

Experimental

Station

Wheat Dry year 801

Open

field

1095~1305 Open field 26.8%

Corn Dry year 1695

Open

field

1350~1605 Open field -5.6%

Rape Dry year 948

Open

field

1305~1545 Open field 27.4%

Potato Dry year 1005

Open

field

1305~1545 Open field 23%

Chinese

Cabbage

Dry year 1725

Open

field

1500~1905 Open field 9.4%

Pepper Dry year 975

Open

field

1155~1395 Open field 15.6%

average Dry year 1191 -- 1284 -- 16.1%

4.3 Conclusion of Rationality

Evaluation

(1) The irrigation water quota of Guizhou Province is

formulated according to the division of the province,

which meets the requirements of "Article 1" of

rationality evaluation.

(2) The irrigation water quota in Guizhou Province

includes three guarantee rates of 50%, 80% and 90%,

which meet the requirements of the second article of

rationality evaluation;

(3) The agricultural water quota standard of Guizhou

Province will be issued and implemented in 2018, and

the revised draft will be officially released in 2019,

which meets the requirements of "Article 3" of

rationality evaluation;

(4) According to the existing irrigation test data, the

difference of rice in Guizhou Province is less than

20%, and that of some dry crops is more than 20%

(50% of the crops in the survey sample do not meet

the requirement of 20% deviation), so it does not fully

meet the requirements of "article 4" of rationality

evaluation.

(5) Evaluation conclusion: according to the rationality

evaluation standard of agricultural water quota, three

of the four items meet the requirements, and the

evaluation result is "reasonable".

5 CONCLUSION

According to the technical requirements of

evaluation, the main conclusions of agricultural water

quota evaluation in Guizhou are as follows.

(1) The three items of comprehensive evaluation meet

the requirements of rationality, so the rationality

evaluation conclusion of agricultural water use quota

in Guizhou Province is "reasonable".

(2) From the current water use level of sample

irrigation areas, the gap between the water use level

of rice in Guizhou Province and the quota value is

small, and the quota formulation is reasonable.

(3) According to the water consumption data of corn,

wheat, corn, potato, rape and vegetables (Capsicum

and Chinese cabbage) in Guizhou Xiuwen Center

Experimental Station, there is a big gap between 50%

of the dry crop quota and the established quota

standard, but the overall average deviation is 16.1%,

which is in a reasonable deviation range.

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220

ACKNOWLEDGMENTS

This research was supported by Special Foundation

for National Science and Technology Basic Research

Program of China (2019FY101900), science and

technology of Water Resources Department of

Guizhou Province (KT201904), Key R&D Program

of Guangxi Zhuang Autonomous Region

(902229136010) and Water conservancy technology

demonstration project (SF: 201913).

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