Sulphur Requirement of Rapeseed-Mustard, Groundnut and Wheat: A Comparative Assessment

Two oilseed species, rapeseed-mustard and groundnut, and wheat, a cereal, were compared for their sulphur requirement. Sulphur accumulation pattern in different plant parts at various growth stages indicated a several fold higher requirement of S in rapeseed-mustard as compared to the other two species. A low N: S ratio found in rapeseed-mustard was also an indicative of its higher S requirement. The S requirement of groundnut was found to be similar to that of wheat. The additional S required by rapeseed-mustard may be attributed to the presence of glucosinolates, a characteristic of cruciferous plants. Sulphur fertilization enhanced yield of the oilseed species but not the per cent oil. The role of sulphur in oil biosynthesis is discussed.     

硫肥的增产效应及其在河南省的应用前景

论述了硫在作物营养平衡中的作用，缺硫原因及其施用硫肥的增产效应。     

不同包装,药剂和硫处理对龙眼贮藏效果的研究

本试验研究了不同包装、药剂和硫处理对石硖龙眼的贮藏效果，结果表明：内包装以０．０２ｍｍ的聚丙烯呈聚乙烯袋为宜，外包装可采用竹篓。普通药剂以特克多５００×１０＾－６加抑霉唑５００×１０＾－６为最佳配方，硫处理中浸泡试验无效。而缓慢放硫处理可使用加二亚硫内或焦亚硫酸风量为６ｇ或８ｋｇ／ｋｇ果；熏硫处理则用３０ｇ硫磺熏蒸３ｋｇ果，时间２０或３０分钟，或者２０ｇ硫磺熏蒸２．５ｋｇ果，时间１５或２５分钟，随     

石灰性土壤施用硫肥的效果

通过对土壤有效硫、植株全硫、子粒蛋白质、植株全磷等的测定 ,提出了石灰性土壤施用硫肥的观点。土壤中的硫含量下降会影响作物的产量和品质 ,施用硫肥可以促进作物对磷素的吸收     

烟草硫素营养研究进展

硫是烟草必需的营养元素之一,是仅次于氮、磷、钾的第四要素。硫素对烟草的生长发育、烟叶的产量和品质有着重要的影响。就近年来国内外烟草硫素研究进展,包括国内主产烟区土壤硫含量的测定分析、烟株对硫元素的吸收利用、施硫对烟草产量和品质的作用等进行了综述,并就今后烟草硫素的研究方向谈了粗浅的看法。     

硫肥在水稻上的肥效试验

试验结果表明,水稻增施硫肥可以增加产量3.9%～13.6%,并促进有效穗的形成和千粒重的提高。     

百菌清烟剂的研制及应用

报道了适合温室用百菌清烟剂的研制和应用。经筛选。确定百菌清烟剂以百菌清和硫磺为主剂．其含量分别为１０％和５％。制定了测定烟剂自燃温度、成烟率、热贮分解和防潮性能的方法。通过测定、百菌清烟剂的自燃温度为１６２．７℃：成烟率８２．０３％；热贮分解率７．７％；吸潮率（３４±０．５）℃．１４ｄ）２．５３％。经田间小区试验证明．该烟剂对黄瓜双霉病的防治效果在９０％以上；对黄瓜炭疽病的防治效果在７０％以上：对黄瓜黑星病的防治效果在４０％以上。与对照相比增产１５％以上。     

Combined nitrogen and sulphur fertilisation and its effect on wheat quality and protein composition measured by SE-FPLC and proteomics

Soil sulphur deficiency, which is increasingly prevalent in Western Europe, lowers wheat yields, and also affects the gluten quality of the flour. Differences in S availability may change the proportion of S-poor to S-rich gliadins and glutenin subunits. This may cause unpredictable and unwanted variations in wheat quality. The combined effects of nitrogen (N) and sulphur (S) fertilisers and split application of S and N on wheat gluten quality and composition were investigated. The results revealed effects of S fertilisation on dough quality. At high N fertilisation levels significant responses to S fertilisation were found which emphasised the need for precision application of S in intensive wheat production systems. Protein fractionation by SE-FPLC showed that quality differences were associated with changing proportions of high M_r polymeric proteins. Changes in protein composition of salt soluble proteins were also confirmed by proteomics. Glyceraldehyde-3-phosphate dehydrogenase and one of the serpin protein spots increased at high N, combined with the lower S level. The enzymes also increased in samples with increased S fertilisation combined with low N, but was not changed at higher N levels. Furthermore, at high N the serpin protein spot, and also a 27 K protein and one unidentified protein spot decreased with increasing S.     

硫对不同蛋白质含量春小麦面团流变学特性的调节效应

为给小麦优质栽培提供理论依据,以3个不同蛋白质含量的春小麦品种为材料,在不同施氮水平条件下研究了施硫对面团流变学特性的调节效应.结果表明,施尿素60 kg/ha(低氮)和128 kg/ha(高氮)条件下,各品种面团韧性随着施硫量的增加总体上呈降低趋势.高氮条件下,施硫对高蛋白品种面团延展性提高不利,且降低吸水率,但可以增加面团形成时间;施纯硫0～50 kg/ha有利于改善低蛋白品种NKH9面团的延展性,对面团形成时间的调节作用呈负效应;施硫对各品种稳定时间的作用趋势与面团形成时间的作用趋势相同.低氮条件下施硫可增加所有供试品种面团形成时间,改善面团延展性.相关分析结果表明,低氮条件下,施硫对小麦品种野猫和东农7742的W值有提高的作用,但不明显;高氮条件下施硫对W值的作用却呈明显的负效应,但两种氮处理条件下施硫对新克旱9的W值作用呈不显著的负效应;施尿素60 kg/ha条件下施硫可提高高蛋白品种的烘焙指数.高氮条件下,施硫可以明显提高高蛋白品种面团形成时间和稳定时间,但对低蛋白品种的作用却相反.