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Analysis on Soil Moisture of Farmland at Spring Sowing Stage in Southern Ningxia Semi-Arid Area
Authors
史竹叶
徐建荣
韩仕峰
Publication date
1 January 1996
Publisher
Abstract
宁南山区的春播表层土壤水分条件,以裸地、豌豆和春麦茬地较好,多数情况下,0~10cm表层,2~4年逢早一次,10~40cm土层,4~5年出现一次水分不足。马铃薯茬地最差,0~10cm表层,4年3旱,10cm以下土层,表现为3年2旱。川台地的裸地、豌豆和春麦茬地好于塬地和山地;胡麻茬地春播表层水分是川台地次于山、塬地;马铃薯茬地春播表层水分是川台地次于塬、山地。抗旱播种方法:0~10cm土层水分不具备播种出全苗时,裸地、豌豆、春麦、胡麻等茬地宜实行套二犁沟垅种植(沟深15~25cm),使种子撒在湿土层;马铃薯茬地可采用深沟高垅双靠栽种。旱年春播要辅以灌溉,春麦、裸地、豌豆等茬地限量灌溉,塬、山地要高于川台地;马铃薯地实行穴灌;胡麻地要蓄墒补灌。无灌溉条件时,提倡马铃薯、胡麻上山种植
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Institute of Soil and Water Conservation,Chinese Academy of Sciences and Ministry of Water Resources
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Last time updated on 21/09/2018