Han Shifeng,Shi Zhuye,Xu Jianrong.Analysis on Soil Moisture of Farmland at Spring Sowing Stage in Southern Ningxia Semi-Arid Area[J].Research of Soil and Water Conservation,1996,3(01):137-141.
宁南半干旱地区轮种主要作物春播土壤墒情分析
- Title:
- Analysis on Soil Moisture of Farmland at Spring Sowing Stage in Southern Ningxia Semi-Arid Area
- Keywords:
- semi-arid area; main crops; spring sowing; soil moisture condition; analysis
- 摘要:
- 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.
- Abstract:
- In southern Ningxia semi-arid area,at spring sowing stage,the soil moisture of uper layer is often lack.The better moisture condition is tllose planted on used by fallown bea and spring wheat last year,which would meet drought one second to spring wheat last year,which field would meet drought one second to fourth yearly within 0-10cm upsoil and soie nd one ourth to fourth to fiveth yearly within 10-40cm,The moisture of potato field is very poor, which droughts happen,in 0-10cm,3 times in 4,years;under lOcm,2 times in 3 years.The moisture of land used by fallow bea or spring wheat in table land is better than that in tableland or slope land The sowing methods of resistant drought are as follows:to be sowed seeds or to be pretected soil water with added up earth;to irrigat litter water to the field;when the irrigation could not implement,to plant flax or potato in slope land is recommended.
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备注/Memo
收稿日期:1995-11-10;改回日期:。