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- W2364921966 abstract "Production brigade is the fundamental working unit of people's commune.Variousdetailed maps appropriate to the agricultural design and management of the brigade areurgently needed.This paper illustrates an attempt to construct a series of maps in Chingtang-fang Production Brigade,Sipali People's Commune,Hwailai,Hopeh Province.Thesaid brigade situates on the alluvial plain in semi-arid region.The base maps prepared in 1:2,000 scale covering an area of about 3,000 mowinclude topographic map with contour intervals in 20 cm.and field block map with allthe field plots and other land patterns.From these two base maps,a series of mapsconcerning soil formation and crop production are prepared.The soil map of the brigade is made on the base of soil types separated accordingto the genetic classification.In addition maps of soil texture,pH value,calcium car-bonate,organic matter and nutrient constitution of the soils are also appended.De-tailed maps showing the degree of salinization of the soils,the compositf salt spotsand also the depth of ground water table,the mineralization and the salt content ofground water are made.Besides,we have also made some detailed maps concerning thedistribution of the arable lands,the evaluation of the soils based on the rate of soil pro-ductivity,the map of land utilization and plantation in the year 1961.Finally,based onall materials above mentioned,an amelioration map is completed.Of all the detailed maps made in the brigade,they may be divided into four groups:the base maps,the soil maps,the maps of salinity of both soils and ground water,and themaps of soil productivity and soil amelioration." @default.
- W2364921966 created "2016-06-24" @default.
- W2364921966 creator A5059097622 @default.
- W2364921966 date "1963-01-01" @default.
- W2364921966 modified "2023-09-25" @default.
- W2364921966 title "DETAILED SOIL STUDY IN A PRODUCTION BRIGADE OF PEOPLE'S COMMUNE IN THE SEMI-ARID PLAIN(I) METHODS FOR THE PREPARATION OF VARIOUS DETAILED MAPS" @default.
- W2364921966 hasPublicationYear "1963" @default.
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