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湖南等全国各大烟区实行的是烟稻水旱轮作制度,为有效降低上茬作物水稻除草剂二氯喹啉酸的残留,减轻对下茬作物烟草的药害,找出奈安最佳使用浓度和方法,开展了除草安全剂奈安对烟株生长发育影响的试验。结果表明:在农艺性状、生理生化指标、化学成分方面,奈安施用浓度不是越高越好,应该按照其最佳浓度进行喷施,少则不能完全缓解除草剂的毒害作用,多则不但不会挽回损失,甚至还会带来更严重的毒害作用,实际生产中要严格尊重适量原则。通过本试验可以推测除草安全剂奈安合理施用浓度应该是在1 200 g/hm2左右。 相似文献
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除草安全剂奈安对烟株生长发育的影响 总被引:2,自引:1,他引:1
为有效降低除草剂残留,找出奈安最佳使用方法,开展了除草安全剂对烟株生长发育影响的试验,结果表明:土壤处理加叶面处理效果好于仅叶面处理。建议用奈安处理时,用量由600 g/hm2增加到1 200 g/hm2,并提前40 d施用。 相似文献
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应用奈安除草安全添加剂试验浅析 总被引:1,自引:0,他引:1
奈安除草安全添加剂可以修复除草剂残留危害,实现作物安全改茬,缩短除草剂对作物的抑制期,消减、缓解除草剂副作用,提高作物产量,改善农产品品质的作用,除草效果较好。产量表现上增产幅度在7.87—14.68之间,有明显的增产作用。经济效益上每亩增效达60.32—112.95元,经济效益显著。安全性上除草剂添加奈安除草安全添加剂没有发现对大豆药害症状,有效缓解了除草剂对作物生长的影响。 相似文献
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奈安除草安全添加剂在大豆45 cm小垄密植中的应用试验结果表明,奈安除草安全添加剂与除草剂配合施用,对大豆安全性提高,产量明显增加,增幅为14.69%。 相似文献
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除草安全添加剂“奈安”的神奇效果及推广应用 总被引:2,自引:0,他引:2
被誉为“奈安之父”的奈安·国际集团董事长党永富先生,始终关注着世界农业安全创新领域。他16年磨一剑,终于研制出一种广谱型除草安全添加剂——奈安。奈安可有效地预防和解除除草剂药害和残留危害,帮助农民解决了两大难题:一是使用除草剂后改茬不方便,二是除草后由于药害及残留危害造成作物产量降低,因而填补了国内空白。 相似文献
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安全剂AD-67对精异丙甲草胺解毒效应研究 总被引:3,自引:0,他引:3
通过田间试验结合生物化学分析方法,研究水稻生产中安全剂AD-67对除草剂精异丙甲草胺的解毒效应,扩大精异丙甲草胺在水稻生产中的使用范围,为生产应用提供理论依据。结果表明,不同剂量精异丙甲草胺对水稻苗床期生长抑制作用明显,随浓度增加其抑制作用增强;AD-67对精异丙甲草胺具有明显解毒效果,随安全剂浓度增加解毒效果升高;AD-67对水稻幼苗SOD、POD、NR、GST活性有促进作用,随安全剂浓度增加促进作用增强。第7天时,SOD酶活增加47.95%~50.52%,POD酶活增加99.12%~102.41%,NR酶活性提高85.93%,谷胱甘肽-S-转移酶(GST)活性提高40.14%。AD-67可保护水稻免受精异丙甲草胺毒害,随安全剂剂量增加,提高移栽水稻解毒效果。精异丙甲草胺中加入30 g·hm~(-2)AD-67解毒效果最好。 相似文献
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Rice ratooning refers to the production of second crop from the stubble after the harvest of main crop.Main and ratoon rice growth and development are affected by different factors.These factors include varieties selection,water management,fertilizer management,stubble height,plant protection practices and external environmental factors such as temperature and light.In this review,we discussed the different factors affecting the yield and yield components of main and ratoon rice.Among these factors the most important and first one is varietal selection.Varieties should be selected according to the requirement of specific area and prefer varieties resistant to insects/pests and diseases.Sufficient amount of water and fertilizer should be supplied.Stubble height of 10-20 cm will resulted in high production of ratoon rice.Too low or too high temperature and light would reduce the grain yield and quality of rice.Optimal temperature is useful for higher yield.It was concluded that by keeping the management practices more efficiently,the yield of main rice as well as ratoon rice could be increased.There is a need of more studies focusing on improvement of the quality of ratoon rice. 相似文献
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采用室内生物活性测定的方法,研究了除草剂解毒剂忖二氯乙酰基-2-甲基-1-氧杂-4-氮杂-螺[4.4]壬烷减轻除草剂乙草胺对后茬作物水稻的残留药害。通过对水稻龙粳14和合江19根长、根鲜重等生理指标的测定,研究了该解毒剂对除草剂乙草胺的解毒效果。试验结果表明:在施用不同浓度的乙草胺的土壤中,用浓度为8mg·kg^-1的解毒剂浸种时,对水稻根长、根鲜重等生理指标均达到最佳的解毒效果,分别可使龙粳14和合江19的根长恢复到对照的104.42%、94.94%、71.72%和104.47%、93.84%、75.72%;根鲜重恢复到对照的112.50%、97.20%、58.41%和103.80%、88.32%、67.39%。 相似文献
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《(《农业科学与技术》)编辑部》2017,(7)
Rice ratooning refers to the production of second crop from the stubble after the harvest of main crop. Main and ratoon rice growth and development are affected by different factors. These factors include varieties selection, water management,fertilizer management, stubble height, plant protection practices and external environmental factors such as temperature and light.In this review, we discussed the different factors affecting the yield and yield components of main and ratoon rice. Among these factors the most important and first one is varietal selection. Varieties should be selected according to the requirement of specific area and prefer varieties resistant to insects/pests and diseases. Sufficient amount of water and fertilizer should be supplied.Stubble height of 10-20 cm will resulted in high production of ratoon rice. Too low or too high temperature and light would reduce the grain yield and quality of rice. Optimal temperature is useful for higher yield. It was concluded that by keeping the management practices more efficiently, the yield of main rice as well as ratoon rice could be increased. There is a need of more studies focusing on improvement of the quality of ratoon rice. 相似文献
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不同高度麦茬田中兑水量对除草剂分布的影响 总被引:1,自引:0,他引:1
研究了不同兑水量情况下,除草剂在免耕麦茬土壤表面和麦茬上的沉积规律。实验结果表明,在无麦茬的情况下,增加除草剂兑水量,并不能提高除草剂在地面分布的均匀性;而在有麦茬条件下,增加兑水量可提高提高除草剂在地面分布的均匀性,减少除草剂在麦茬上的沉积。 相似文献
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稻田常用化学除草剂对水稻生长及土壤生态影响的初步研究 总被引:2,自引:0,他引:2
化学除草是目前稻田草害防治的重要手段之一,针对稻田化学除草剂使用量大且年趋增多的趋势,开展了稻田常用化学除草剂对水稻生长及土壤生态的影响研究,研究表明:稻田常量施用化学除草剂可有效地防除杂草、减轻杂草的危害,对水稻生长无明显不良影响,但加量施用在一定程度上会影响水稻的分蘖及产量;另外,化学除草剂的使用在一定程度上还降低了土壤中微生物的数量及土壤中一些酶的活性,从而影响了稻田土壤质量及供肥能力,施药量越大影响越大. 相似文献