干旱地区农业研究
榦旱地區農業研究
간한지구농업연구
AGRICULTURAL RESEARCH IN THE ARID AREAS
2000年
4期
31-35
,共5页
盐渍区%冬小麦%返青期%灌水%脱盐%产量
鹽漬區%鼕小麥%返青期%灌水%脫鹽%產量
염지구%동소맥%반청기%관수%탈염%산량
近滨海缺水盐渍区冬小麦返青期灌水试验表明,当每公顷浇水量为750m3时,0cm～20cm耕层土壤HCO-3,Cl-,SO2-4,Ca2+,Mg2+,Na++K+盐离子含量分别下降3.50%,50.04%,67.76%,41.15%,38.89%和29.59%,淋脱量大小顺序为:SO2-4>Cl->Ca2+>Mg2+>Na++K+>HCO-3,耕层脱盐率42.17%.浇水处理,返青期灌水10 d后单株分蘖数与干物重分别比对照增加1.2条,0.09g;灌浆期绿叶面积增加3.95cm2;成熟期株高、穗数、穗粒数和千粒重分别比对照增加6.9cm,180.0万/hm2,3粒和2.23g,增产68.40%,其中分蘖数、穗数和产量与对照的差异达极显著水平,灌浆期单株绿叶面积达显著水平.
近濱海缺水鹽漬區鼕小麥返青期灌水試驗錶明,噹每公頃澆水量為750m3時,0cm～20cm耕層土壤HCO-3,Cl-,SO2-4,Ca2+,Mg2+,Na++K+鹽離子含量分彆下降3.50%,50.04%,67.76%,41.15%,38.89%和29.59%,淋脫量大小順序為:SO2-4>Cl->Ca2+>Mg2+>Na++K+>HCO-3,耕層脫鹽率42.17%.澆水處理,返青期灌水10 d後單株分蘗數與榦物重分彆比對照增加1.2條,0.09g;灌漿期綠葉麵積增加3.95cm2;成熟期株高、穗數、穗粒數和韆粒重分彆比對照增加6.9cm,180.0萬/hm2,3粒和2.23g,增產68.40%,其中分蘗數、穗數和產量與對照的差異達極顯著水平,灌漿期單株綠葉麵積達顯著水平.
근빈해결수염지구동소맥반청기관수시험표명,당매공경요수량위750m3시,0cm～20cm경층토양HCO-3,Cl-,SO2-4,Ca2+,Mg2+,Na++K+염리자함량분별하강3.50%,50.04%,67.76%,41.15%,38.89%화29.59%,림탈량대소순서위:SO2-4>Cl->Ca2+>Mg2+>Na++K+>HCO-3,경층탈염솔42.17%.요수처리,반청기관수10 d후단주분얼수여간물중분별비대조증가1.2조,0.09g;관장기록협면적증가3.95cm2;성숙기주고、수수、수립수화천립중분별비대조증가6.9cm,180.0만/hm2,3립화2.23g,증산68.40%,기중분얼수、수수화산량여대조적차이체겁현저수평,관장기단주록협면적체현저수평.
