保水剂不同施用方式及施用量对胡萝卜出苗的影响  

Effects of Different Application Methods and Dosage of Super Absorbent Polymer on Seeding Emergence of Carrot

作　　者：闫永利[1] 于健 任秀苹 

机构地区：[1]内蒙古农业大学职业技术学院,内蒙古包头014109 [2]内蒙古自治区水利科学研究院,呼和浩特010020 [3]包头市土默特右旗水务局,内蒙古包头014109

出　　处：《节水灌溉》2013年第9期25-29,共5页Water Saving Irrigation

基　　金：国家"863"计划资助项目(2002AA2Z4171)

摘　　要：为了研究保水剂不同施用方式及施用量对胡萝卜出苗的影响，通过田间试验，对保水剂浸种、沟施以及与土壤混施下保水剂用量对胡萝卜出苗的影响进行了研究。结果表明，在一定的土壤水分条件下，适量施用保水剂可不同程度提高胡萝卜的出苗率，但其效果受保水剂施用方式及用量的影响。保水剂浸种，用量在3～15kg／hm2，出苗率较对照提高29．5％～73．3％；沟施用量为30kg／hm2，出苗率提高幅度最大为77．8％，再增大用量其提高作物出苗的功效减弱，甚至出现负效应，使作物出苗率降低；保水剂以15～45kg／hm。与土壤混施，出苗率较对照虽然有4．6％～7．0％的提高，但差异不显著。就保水剂的投入成本及在田间应用中的操作难易而言，对于浸种，少量施用可明显提高出苗率，但不便于操作；沟施及与土壤混施2种方式操作简单，更适合大面积推广应用，但为达到较好的效果，需加大保水剂的施用量。In order to study the effects of different application methods and dosage of super absorbent polymer（SAP） on the seeding emergence of carrot, based on the field experiments, the effects of dosage of SAP on the seeding emergence of carrot under three ap- plication methods, including seed soaking, ploughed furrow and mixed with soil, are studied in this paper. The results show that un- der a certain conditions of soil moisture, reasonably applying SAP can improve the emergence rate of carrot in a certain extent, but the effect is influenced by the application methods and dosage of SAP. Under the condition of seed soaking and the dosage of SAP is 3-15 kg/hm2, the emergence rate of carrot is increased by 29. 5%-73. 3% compared with the control. Under the condition of ploughed furrow and the dosage of SAP is 30 kg/hm2 , the emergence rate can be improved by 77. 8% at the largest, and when the a- mount of SAP increases continually, the efficacy of improving the crop emergence diminishes, or even has negative effect and leads to the decrease of emergence rate. Under the condition of SAP and the dosage is 15-45 kg/hm2 mixed with soil, the emergence rate of carrot is increased by 4. 6%-7.0% compared with the control, but the difference is not significant. As to SAP costs of input and its ease of operation in field application, for seed soaking, small amount of SAP can enhance the emergence rate significantly, but not easy to operatel The two applications of ploughed furrow and mixed with soil are simple and more suitable for large scale application, but the amount of SAP needs to be increased for achieving the better effect of improving the emergence rate.

关 键 词：保水剂 施用方式 用量 胡萝卜 出苗 

分 类 号：S157.4[农业科学—土壤学] S27[农业科学—农业基础科学]