金华市农业机械化投入机制初探

农业机械化是农业现代化的基础，是现代化的先决条件，发展农业机械化迫切需要加大投入。为此，分析了金华市现阶段农机化投入的现状及存在的问题；提出了通过建立政府、集体、信贷、农户、外资等“多位一体”的投入机制，加大农机化投入，促进农机化事业健康发展的思路。     

An evaluation of the Olsen test as a measure of plant-available phosphorus in grassland soils derived from basalt parent material

Abstract. Anecdotal and circumstantial evidence have suggested that the Olsen test underestimates plant-available phosphorus (P) in basaltic soils in Northern Ireland. Therefore, the ability of this test to predict plant-available P in basaltic (and non-basaltic) soils was investigated by regressing Olsen-P data against herbage P indices calculated from plant tissue test data using the diagnosis and recommendation integrated system. The average Olsen-P concentration for a range of fields situated on basaltic soils was considerably lower than the average Olsen-P concentration for a range of fields situated on non-basaltic soils, and yet mean sward P status, as given by the herbage P indices, was similar for both groups of fields. Herbage P indices were also much better correlated with Olsen-P measurements in non-basaltic soils than in basaltic soils. Furthermore, at low Olsen-P values (≶9mgPL⁻¹) some swards on basaltic soils were genuinely deficient in P, while others were sufficient or even in surplus for this nutrient. The results confirm that Olsen-P is inadequate as a predictor of plant-available P in basaltic soils. It is concluded that an alternative soil test is needed to provide a reliable assessment of plant-available P in basaltic soils, to prevent overuse of fertilizer and manure P and to minimize the amounts of P entering local watercourses.     

运用模糊数学和灰色系统理论分析评价夏播花生区试品种

运用模糊数学和灰色系统理论，对2007年河南省夏播花生区试品种进行了多因素综合评价和分析，结果表明：周花4号评价指标是0．7089，综合表现最优；其次是W9847—1—3—4—1，其综合评价指标是0．6352；豫花6号评价指标是0．3630，综合表现最差。此结果与试验地实际表现基本相一致。     

The Phytotoxicity of Various Graminicides in Durum Wheat in Greece

The effect of three herbicides, diclofop-methyl (DM), imazamethabenz-methyl (IM) and fenoxaprop-ethyl (FE), was investigated at the recommended rate (×) and double the recommended rate (2×) in a durum wheat crop. FE had the smallest effect on root system characteristics, while IM had the greatest effect. For all herbicides, the double rate treatment gave a greater statistical reduction than the single rate for root system characteristics. FE had the smallest effect on the activity of aerobic microorganisms, while DM gave the greatest reduction, 10 days after application, and all three herbicides reduced earthworm abundance. DM gave the smallest reduction in the number of tillers and in plant height, while the double rate of IM gave the greatest reduction. For all three herbicides, double the recommended rate resulted in a significant reduction in the weight of 1000 seeds, while no statistically significant deviations were noted at the recommended rate. Finally, the use of all three herbicides resulted in significantly lower statistical yields compared to the sample (control plot), although there were no significant statistical differences among them, for either recommended or double recommended rates.     

甘孜州退化草地生态系统综合治理对策研究

介绍了甘孜州草地生态系统现状,在分析草地退化原因和危害的基础上,提出了综合治理退化草地生态系统的措施。     

加工现场微机控制系统抗干扰的研究

针对制造业加工现场的环境特点，分析了微机控制系统的干扰来源和途径，介绍了实用的抗干扰措施。实践证明：这些软硬件抗干扰措施的综合运用，使自动化加工中微机控制系统的稳定性得到了较大的提高。     

构建“三位一体”防治网络预防青少年违法犯罪

青少年违法犯罪是当前的严重问题，造成这一局面有青少年自身的原因，也有社会环境的影响。预防青少年违法犯罪己成为迫在眉睫的问题，必须坚持学校、社会和家庭的配合，建立社会化防治网络，形成良好的外部环境，才能使青少年得以健康成长。     

我国农村经济组织体系分析

通过分析我国现阶段农村经济组织的组织模式、功能及组织连接机制,指出我国农村经济组织已形成以农户家庭经营为基础层次,以社区合作经济组织、专业合作经济组织及以“公司 农户”为典型的契约型组织分别为第二、三、四层次,效能逐级递增,各层次之间具有互动作用的组织体系。     

二阶拟线性椭圓型Euler方程组解的Pohozaev型恒等式及其应用

本文对于二阶椭圆型Euler方程组 -∑D_αF_(q_α~i)(x,u,Du)+F_(ui)(x,u,Du)=0得到了一些积分恒等式,利用这些恒等式证明了某些方程组非平凡解的不存在性。