干旱地区农业研究
榦旱地區農業研究
간한지구농업연구
AGRICULTURAL RESEARCH IN THE ARID AREAS
2014年
4期
85-90
,共6页
玉米苗期%交替灌溉%灌水下限%生长指标%生理指标
玉米苗期%交替灌溉%灌水下限%生長指標%生理指標
옥미묘기%교체관개%관수하한%생장지표%생리지표
corn%alternate partial root-zone irrigation%irrigation threshold%growth and physiological indicator
对玉米苗期根系局部供水条件下生长、生理指标对不同灌水下限（占田间持水量60％、65％、70％、75％）的响应进行了研究。结果表明：占田间持水量65％的灌水下限（T2）处理的株高、茎粗等生长指标明显优于其他处理，与全面灌溉（CK ，占田间持水量60％）相比，T2处理的生物积累总量提高了1．2％，而其他处理的生物积累总量降低；随着灌水下限的不断提高，苗期玉米叶片组织中脯氨酸、可溶性糖和植物组织相对含水量等生理指标不断降低，占田间持水量65％的灌水下限（T2）处理的脯氨酸和可溶性糖的含量与CK处理结果相近，差异不显著。
對玉米苗期根繫跼部供水條件下生長、生理指標對不同灌水下限（佔田間持水量60％、65％、70％、75％）的響應進行瞭研究。結果錶明：佔田間持水量65％的灌水下限（T2）處理的株高、莖粗等生長指標明顯優于其他處理，與全麵灌溉（CK ，佔田間持水量60％）相比，T2處理的生物積纍總量提高瞭1．2％，而其他處理的生物積纍總量降低；隨著灌水下限的不斷提高，苗期玉米葉片組織中脯氨痠、可溶性糖和植物組織相對含水量等生理指標不斷降低，佔田間持水量65％的灌水下限（T2）處理的脯氨痠和可溶性糖的含量與CK處理結果相近，差異不顯著。
대옥미묘기근계국부공수조건하생장、생리지표대불동관수하한（점전간지수량60％、65％、70％、75％）적향응진행료연구。결과표명：점전간지수량65％적관수하한（T2）처리적주고、경조등생장지표명현우우기타처리，여전면관개（CK ，점전간지수량60％）상비，T2처리적생물적루총량제고료1．2％，이기타처리적생물적루총량강저；수착관수하한적불단제고，묘기옥미협편조직중포안산、가용성당화식물조직상대함수량등생리지표불단강저，점전간지수량65％적관수하한（T2）처리적포안산화가용성당적함량여CK처리결과상근，차이불현저。
The growth and physiological indicators of corn with different irrigation lower limits in seedling stage were investigated under alternate partial root-zone irrigation .The results showed that the plant height and stem diameter of T 2 (65% of field capacity as irrigation lower limit ) were remarkably higher than those of other treatments .Compared with full irrigation (CK ) , the biological accumulation quantity of T2 increased by 1 .2% , but that of other treatments de-creased obviously .With the increasing of irrigation lower limit ,the content of soluble sugar and proline in corn leaves and the relative water content of plant tissue were decreased continuously in seedling stage ;the content of soluble sugar and proline under T2 was similar to that under full irrigation (CK ) and the difference between them was insignificant .
