植物营养与肥料学报Issue(6)：1560-1568,9.DOI:10.11674/zwyf.2014.0627
喷施小分子有机物对小油菜生长发育和养分吸收的影响
Effects of spraying loW molecular organic compounds on groWth and nutrients uptaKe of rape(Brassica Chinensis L·)
摘要
Abstract
Objectives]Some 1ow-mo1ecu1ar organic comPounds are wide1y used as ferti1izer assistants in fo1iar ferti1izers for their good humectants,Penetrative and adhesive ProPerties. However,1itt1e attentions have been Paid to their effects on P1ant growth and nutrients uPtake unti1 now. Therefor,the effects of sPraying 1ow mo1ecu1ar organic comPounds( sorbito1,sodium g1uconate and g1ycine)on the growth and nutrients uPtake and their oPtimum aPP1ication rate were studied in this PaPer.[Methods]A Pot exPeriment was conducted with raPe( Brassica Chinensis L. )as matira1. Water was sPrayed as contro1(CK),four sPraying densities of sorbito1(30,90,150 and 300 mg/kg),sodium g1uconate(150,300,600 and 1200 mg/kg)and g1ycine(60,120,250 and 500 mg/kg) were designed with four reP1ications each treatment. Treatments were imP1emented since the beginning of three-1eaf stage of raPe and four sPrayings continued with a frequency of every seven days. The raPe biomass,1eaf SPAD va1ues and contents of nitrate,so1ub1e sugar,so1ub1e Protein and main nutrients of raPe were measured.[Results]1)ComPared with contro1,the raPe biomass were increased by 9. 80%,26. 37% and 25. 40% in the treatment of sPraying sorbito1,sodium g1uconate and g1ycine,and the best sPraying density of sorbito1,sodium g1uconate and g1ycine were 300 mg/kg,600 mg/kg and 250 mg/kg,and the raPe yie1ds were increased by 25. 60%,31. 87%and 35. 87%,resPective1y. 2 )ComPared with contro1,sPraying ProPer 1ow mo1ecu1ar organic comPounds cou1d imProve the nutrients( N,P,K)uPtake,enhance the contents of so1ub1e sugar and Protein,Promote SPAD va1ues and decrease the nitrate content of raPe obvious1y. 3)The corre1ation ana1ysis showed that there was a significant corre1ation of quadratic curve between the sPraying concentration of the 1ow mo1ecu1ar organic comPounds and the biomass,nutrients uPtake caPacity and qua1ity of raPe,resPective1y,which indicated that the oPtima1 aPP1ication rate of sorbito1,sodium g1uconate and g1ycine were 150 -300 mg/kg,600 -1200 mg/kg and 120 -250 mg/kg, resPective1y.[Conclusions]SPraying 1ow mo1ecu1ar organic comPounds( sorbito1,sodium g1uconate and g1ycine) cou1d increase the biomass,imProve the qua1ity and enhance nutrients( N,P,K ) uPtake of raPe. The 1ow mo1ecu1ar organic comPounds can be sPrayed direct1y to P1ant 1eaves as the organic nutrients as we11 as assistants in ferti1izers.关键词
小分子有机物/产量/品质/养分吸收Key words
1ow mo1ecu1ar organic comPounds/yie1d/qua1ity/nutrient uPtake分类
农业科技引用本文复制引用
于会丽,林治安,李燕婷,袁亮,赵秉强..喷施小分子有机物对小油菜生长发育和养分吸收的影响[J].植物营养与肥料学报,2014,(6):1560-1568,9.基金项目
农业产业技术体系建设专项经费（CARS-3-2-18）；国家科技支撑计划课题（2011BAD11B05）；公益性行业（农业）科研专项经费（201103003）资助。 （）
