论文部分内容阅读
ｎ＝１５水稻是喜硅作物，水稻植株叶茎含ＳｉＯ２量可达１０％，说明一季水稻从土壤中带走的硅素是可观的。目前南通地区，土壤有效硅含量＞２３０ｍｇｋｇ－１时，已能满足水稻对硅的需求，施用硅肥已没有明显的增产作用。从１９９１年１０个样点试验结果分析，当每亩施５公斤高效硅肥（含可溶性ＳｉＯ２＞５０％）时，已能满足水稻高产稳产对硅素的需要。四、大田试验效果１９９１年在启东市的寅阳、大兴、聚南乡和南通县的刘桥、平东乡等地及海安县稚周、如皋县林棒、如东县新店、郊区闸东等乡进行硅肥大田试验，结果表明，施用硅肥有明显的抗倒伏作用，倒伏程度减轻６１一８１％，并对水稻后期有明显的保叶作用，植株完熟推迟３～５天，成穗率增加６．５％，实粒增多８．７％，粒重提高１．２％，每亩增产稻谷６７．０公斤，增产率达１２．３％。旱稻是一种易倒伏的作物，在生产上抗倒伏成为夺取旱稻高产的关键问题。１９９０、１９９１两年在王鲍乡的试验中，分充显示出了增施硅肥的抗倒伏作用。旱稻施用硅肥将是生产上必要的增产措施。此外，在南通县刘桥镇和如皋县林样乡土壤有效硅含量在１５０一２００ｍｇｋｇ－１水平条件下，还进行了硅肥基施和水稻拔节期追肥对比研究，结果表明硅肥在水稻?
n = 15. Rice is a hi-silicon crop. The content of SiO2 in the leaves and stems of rice plants is up to 10%, which shows that the silicon in the first season rice is considerable from the soil. At present, Nantong area, the soil available silicon content> 230mgkg-1, has been able to meet the demand of rice silicon, silicon fertilizer application has no obvious effect. According to the analysis of 10 sample plots in 1991, when high-efficiency silicon fertilizer (containing soluble SiO2> 50%) was applied at 5 kg / acre, the requirement for high-yielding rice for silicon could be satisfied. Fourth, the field test results in 1991 in Qidong City, Yinyang, Daxing, poly Nantong County and Liuqiao, Pingdong Township and Hai’an County, Chi Zhou, Rugao Lin sticks, Rudong store, suburban Zhandong Township silicon fertilizer field trials, the results show that the application of silicon fertilizer has a significant anti-lodging effect, reducing the degree of lodging 61-81%, and the late leaves of rice have a significant role in leaf-setting, delayed completion of plants 3-5 days, spike rate Increased by 6.5%, grain increased by 8.7%, grain weight increased by 1.2%, yield increased 67.000 kg per mu, the yield increased by 12.3%. Upland rice is an easily lodging crop, and lodging resistance in production has become the key issue to seize the high yield of Upland rice. In 1990 and 1991, Wang Baoxiang’s experiment showed that the anti-lodging effect of silicon fertilizers increased. Upland rice application of fertilizer will be necessary to increase production measures. In addition, under the condition of 150-200mgkg-1 of soil available silicon content in Liuqiao Town of Nantong County and Linxiang Town of Rugao County, a comparison study on the top dressing of silicon fertilizer and jointing stage of rice was also conducted.