Models of Circular Economy on Agriculture in Yunnan Province


 Agricultural environment pollution



Download 155,45 Kb.
Pdf ko'rish
bet2/4
Sana23.04.2022
Hajmi155,45 Kb.
#575622
1   2   3   4
Bog'liq
models of circyllar

3. Agricultural environment pollution 
3.1. Agricultural production factors are in heavy pollution. 
Pesticide on the environmental pollution cannot be ignored. Now, there is pesticide using one fold, 
using excessive and using incorrectly everywhe re in Yunnan province. The to xicity for hu man an d 
livestock fro m residue of active ingredients with high toxic and high pesticide is severing. And pesticide 
is also harm to water, soil and agricultural products. 
Fertilizer pollution is getting to serious. Nutrition loses because of long -term erupting and slanting 
fertilizer. Then, it leads to soil acid ification and hardening. After that, it appears to water pollution and 
eutrophication because nutrient supply is not harmonious in soil. 
According to concerned investigation data, nitrogen and phosphorus ca using to the water-body 
eutrophication in most of lakes in Yunnan province is about 50% coming fro m fert ilizer applied in 
farmland. 
Plastic film is la rgely used in orde r to increase output of crops. Now, plastic films recycle not 
complete ly because of all sorts of reasons. In Yunnan province, average plastic film retention rate is 20% 
in soil. Residual films reduce soil infiltration function, and also reduce water in soil. Then, drought 
resistance capability of farmland is reduced. So, it wills bock crop growth. At last, it will bring adverse 
impact to the agricultural production and the ecological environment. 
3.2. The rate of agricultural wastes utilization is low, and pollution by agricultural wastes is severe.
In the past, wastes of farmland are generally used as feed of livestock or fertilize r by decomposed for 
farmland. W ith the spreading of che mical agriculture and the sale of various convenient feed, and lack of 


1080

Huang Xi / Energy Procedia 5 (2011) 1078–1083
more convenient or applicable technology for decomposed manure, most of peasants give up the habit of 
using farmland wastes. So, farmland wastes are discarded by farme rs. Pollution by farmland wastes is 
heavier. 
The use rate of livestock waste is still lo w. Most of livestock wastes are use as fertilizer in farmland by 
peasants in Yunnan province. But, the methods of using livestock wastes are simple. Livestock wastes 
can’t be full used. The rest of livestock wastes become a major source of environmental pollution.

Download 155,45 Kb.

Do'stlaringiz bilan baham:
1   2   3   4




Ma'lumotlar bazasi mualliflik huquqi bilan himoyalangan ©hozir.org 2024
ma'muriyatiga murojaat qiling

kiriting | ro'yxatdan o'tish
    Bosh sahifa
юртда тантана
Боғда битган
Бугун юртда
Эшитганлар жилманглар
Эшитмадим деманглар
битган бодомлар
Yangiariq tumani
qitish marakazi
Raqamli texnologiyalar
ilishida muhokamadan
tasdiqqa tavsiya
tavsiya etilgan
iqtisodiyot kafedrasi
steiermarkischen landesregierung
asarlaringizni yuboring
o'zingizning asarlaringizni
Iltimos faqat
faqat o'zingizning
steierm rkischen
landesregierung fachabteilung
rkischen landesregierung
hamshira loyihasi
loyihasi mavsum
faolyatining oqibatlari
asosiy adabiyotlar
fakulteti ahborot
ahborot havfsizligi
havfsizligi kafedrasi
fanidan bo’yicha
fakulteti iqtisodiyot
boshqaruv fakulteti
chiqarishda boshqaruv
ishlab chiqarishda
iqtisodiyot fakultet
multiservis tarmoqlari
fanidan asosiy
Uzbek fanidan
mavzulari potok
asosidagi multiservis
'aliyyil a'ziym
billahil 'aliyyil
illaa billahil
quvvata illaa
falah' deganida
Kompyuter savodxonligi
bo’yicha mustaqil
'alal falah'
Hayya 'alal
'alas soloh
Hayya 'alas
mavsum boyicha


yuklab olish