新型土壤结构改良剂水分特性及其对玉米苗期的影响研究  

Preliminary Research on Moisture Characteristic of New Soil Conditioner and Its Influences on Seeding Stage of Corn

作　　者：张燕[1,2] 冯浩[2,3] 汪有科[2,3] 杜健[2,4] 赵西宁[2] 许晓平[1,2] 王禹[5] 

机构地区：[1]西北农林科技大学资源与环境学院,陕西杨凌712100 [2]中国科学院水利部水土保持研究所,国家节水灌溉杨凌工程技术研究中心,陕西杨凌712100 [3]西北农林科技大学水利与建筑工程学院,陕西杨凌712100 [4]西北农林科技大学农学院,陕西杨凌712100 [5]中国科学院研究生院资源与环境学院,北京010019

出　　处：《节水灌溉》2008年第5期6-9,共4页Water Saving Irrigation

基　　金：国家“863”计划课题“降水资源转化利用技术”(2006AA100204);新世纪优秀人才支持计划资助;西北农林科技大学青年学术骨干支持计划资助

摘　　要：试验采用室内研究的方法,探讨2种以环境废弃资源为主要原料的新型土壤改良剂的基本水分特性,验证其对玉米苗期的影响。试验结果表明,2种改良剂在不同溶液中溶胀度不同,PJG在蒸馏水中溶胀度最大,PFL则是在自来水中吸水能力最强。PFL的吸水速率要低于PJG,单位质量最大吸水量1.705,为PJG的46.9%。2种改良剂对玉米出苗率的影响不是很明显,但能显著地提高玉米苗期株高和叶面积,对苗期土壤水分的散失也起到了很好的抑制作用。2种改良剂都能明显提高玉米苗期水分利用效率,最优水平分别高于对照27.89%和58.99%。综合各方面结果,建议在玉米试验中使用PJG的最佳浓度为0.8%,PFL为0.05%。The experiment, which adopts indoor research, is carried out to study the basic moisture characteristic oi two new soil conditioners, of which the primary material are discarded resources, and verified their influences on seeding stage of corn. The results show that the swelling degrees of the two soil conditioners are different in different solution. The maximum swelling degree of PJG is in the distilled water, while the maximum sopping capability of PFL is in the water. The sopping speed of PFL is lower than that of PJG. Its unit maximum sopping capability is 1. 705, which is 46.9% of PJG. The influences of the two soil conditioners on the see ding rate of corn are unobvious. But they all can obviously enhance the plant height and leaf area in seeding stage of corn, and have good restraining effects for the water evaporation in seeding stage. The two soil conditioners all can obviously enhance the water use efficiency in seeding stage, and the optimal level is higher than CK at 27.89% and 58.99%. According to the result, it is suggested that in the corn experiment, the optimal consistency of PLG is 0. 8%,while that of PFL is 0.05%.

关 键 词：土壤改良剂 水分特性 玉米 

分 类 号：S156.2[农业科学—土壤学]