CAJ | 학술논문

2008年在江苏沿海海涂进行田间试验研究了苏北沿海滩涂盐肥对油葵生长及离子分布的影响.结果表明:①土壤盐分在S2(2.9～3.6 g/kg)时对油葵籽粒产量影响不大,但随着土壤盐分的增加,在S3(5.9～6.8 g/kg)时,油葵籽粒产量较S1(1.3～1.6 g/kg)时显著下降.随着N肥和P肥使用量的增加,油葵籽粒产量显著增加,且盐分含量越高,P肥和N肥增产效应越大;②随着土壤盐分含量的增加,油葵根、茎、叶、盘中Na+和Cl-含量显著增加,而K~+和Ca~(2+)变化不大;③随着P肥及N肥的施用量的增加,油葵根、茎、叶、盘中Na+和Cl-含量均降低,而K+和Ca2+的含量均增加.说明N肥和P肥的施入增强了油葵对营养离子的选择性吸收与运输,抑制了油葵对盐害离子的选择性吸收与运输,表明在苏北沿海海涂上施用肥料能够改善油葵营养状况并增强油葵耐盐性,对于增加油葵籽粒产量是一个很有效的办法.
2008년재강소연해해도진행전간시험연구료소북연해탄도염비대유규생장급리자분포적영향.결과표명:①토양염분재S2(2.9～3.6 g/kg)시대유규자립산량영향불대,단수착토양염분적증가,재S3(5.9～6.8 g/kg)시,유규자립산량교S1(1.3～1.6 g/kg)시현저하강.수착N비화P비사용량적증가,유규자립산량현저증가,차염분함량월고,P비화N비증산효응월대;②수착토양염분함량적증가,유규근、경、협、반중Na+화Cl-함량현저증가,이K~+화Ca~(2+)변화불대;③수착P비급N비적시용량적증가,유규근、경、협、반중Na+화Cl-함량균강저,이K+화Ca2+적함량균증가.설명N비화P비적시입증강료유규대영양리자적선택성흡수여운수,억제료유규대염해리자적선택성흡수여운수,표명재소북연해해도상시용비료능구개선유규영양상황병증강유규내염성,대우증가유규자립산량시일개흔유효적판법.
A field experiment was carried out in coastal mudflat in Yancheng of northern Jiangsu Province to study the coupling effects of salt and fertilizer application on the growth and ion distribution of oil sunflower in 2008.The results were as follows:① Compared to S1 treatment (the salt concentration of soil was 1.3-1.6 g/kg),there was no significant decrease of seed yield under S2 treatment (the salt concentration of soil was 2.9-3.6 g/kg).The seed yield decreased with an increase of salt concentration of soil under S3 treatment (the salt concentration of soil was 5.9-6.8 g/kg).The seed yield increased with the increases of N and P additions,and the effects of N and P increased with an increase of salt concentration of soil.②Na~+ and Cl-contents in root,stem,leaf and disc increased significantly with the increase of salt concentration of soil but K~+ and Ca~(2+) changed slightly.③Under the same concentration of soil salt,Na+ and Cl-contents in root,stem,leaf and disc all decreased with the increase of N and P additions while K+ and Ca~(2+) increased.The results showed that nutrient ions were further absorbed and transported selectively and the harmful ions of salt were further restrained with the application of nitrogen and phosphorus.It is an effective way to increase saline tolerance and seed yield of oil sunflower by the use of nitrogen and phosphorus in the coastal mudflat of northern Jiangsu.