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| 1 | 硼引发对紫花苜蓿种子活力的影响显示文摘以品种WL440HQ的紫花苜蓿(Medicago sativa)种子为材料,通过浓度为0、0.1%、0.3%、0.6%、1.2%、2.4%和4.8%的硼砂溶液在20℃条件下引发0、3、6和9h后,分析其发芽率、平均发芽时间、发芽指数和幼苗活力指数的变化,以探讨外源硼引发对紫花苜蓿种子活力的影响。结果表明:硼浓度、引发时间及二者的交互作用对紫花苜蓿种子的发芽率、平均发芽时间、发芽指数和幼苗活力指数具有极显著(P<0.01)影响。低浓度硼引发可有效提高紫花苜蓿的种子活力,而高浓度硼引发则相反。浓度为0.1%的硼引发3h时,紫花苜蓿的种子活力保持最高水平;而浓度为4.8%的硼引发9h时,紫花苜蓿的种子活力显著(P<0.05)降低。因此,采用硼对紫花苜蓿种子进行引发时必须掌握好合理的硼浓度及时间。采用浓度为0.1%的硼引发3h是提高紫花苜蓿种子活力的最佳方式。 | 王聪聪 王雅聪 王菲 董宽虎 夏方山 | 2021 | 草学2021，，3： | 5 |
| 2 | 花生-油菜轮作模式下硼肥及其后效对作物产量的影响显示文摘通过田间试验研究硼砂(B,Na_2B_4O_7·10H_2O)、Ulexitegranular(UB,NaCaB5O_9·8H_2O)、Etibor-48(EB,Na_2B_4O_7·5H_2O)和Colemanite(CB,Ca_2B_6O_(115)H_2O)四种硼肥在花生-油菜轮作中的肥效及其后效对作物产量的影响。结果表明,按正常施硼量(纯硼用量1.70kg/hm^2)基施硼砂、UB、EB和CB四种硼肥,花生和油菜产量均有不同程度的提高;两倍施硼量(纯硼用量3.40kg/hm^2)与正常施硼量相比,不同硼肥处理作物增产率均有不同程度降低,其中土壤有效硼含量0.49mg/kg时,作物增产率并不随施硼量的继续增加而升高。基施四种硼肥,三季作物收获后土壤有效硼含量均高于0.5mg/kg,秸秆硼含量与作物产量也显著高于不施硼处理。基施硼肥可以改善土壤有效硼状况,具有较强缓释性的硼肥UB和CB在第二季和第三季具有较好的增产效果。在农业生产上可以根据土壤有效硼状况和硼肥本身的缓效性作为基施长效硼肥合理推广利用。 | 马欣 韩宝吉 张丽梅 石磊 | 2018 | 中国油料作物学报2018，40，6： | 5 |
| 3 | Application of Micronutrients in Rice-Wheat Cropping System of South Asia显示文摘Rice-wheat cropping system (RWCS) is one of the most important cropping systems in South Asia. However, sustainability of this system is under threat owing to several factors, of which deficiency of micronutrients particularly zinc (Zn), boron (B) and manganese (Mn) is one of the major problems. Continuous rotation of rice and wheat, imbalanced fertilizer use and little/no use of micronutrient-enriched fertilizers induce deficiencies of Zn, B and Mn in the RWCS of South Asia. Here we review that (i) imbalanced fertilizer use and organic matter depletion deteriorate soil structure resulting in low efficiency of applied macro- and micro-nutrients in RWCS.(ii) The micronutrients (Zn, B and Mn) are essentially involved in metabolism of rice and wheat plants, including chlorophyll synthesis, photosynthesis, enzyme activation and membrane integrity.(iii) Availability and uptake of Zn, B and Mn from rhizosphere depend on the physico-chemical soil properties (which differ under aerobic and anaerobic conditions) including soil pH, soil organic matter, soil moisture and interaction of these micronutrients with other nutrients.(iv) Plant ability to uptake and utilize the nutrients is affected by several plant factors such as root architecture, root hairs, transport kinetics parameter and root exudates.(v) Crop management and application of these microelements can help correct the micronutrients deficiency and enhance their grain concentration. | Faisal NADEEM Muhammad FAROOQ | 2019 | Rice science2019，26，6： | 1 |
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