共查询到18条相似文献，搜索用时 156 毫秒
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通过对9个外引纤维用亚麻品种(系)在云南五点两年的区域试验,从其原茎产量、主要农艺性状、生育期等方面进行了综合评价。地安那、华星002、依莱克翠和华星001原茎产量较对照增产,且综合性状较好,适宜在云南大面积种植;派克丝、依罗娜、和华星004可在特定的区域进行推广。本研究同时对所参试的品种的丰产性及其稳定性进行了分析。 相似文献
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云南亚麻高产栽培数学模型研究 总被引：2，自引：0，他引：2
本试验研究了亚麻品种阿里安在秋播条件下的密度、氮、磷、钾肥施用量及氮肥施用时期五个主要可控栽培因子与原茎产量之间的效应关系及其数学模型。获取相应的农艺措施；优选出最佳农艺措施：密度2008株／666．7m^2、尿素24．05kg/666．7m^2、普钙39．3kg／666．7m^2、硫酸钾2．7kg/666．7m^2、尿素施用适期是底肥5％、枞形前期25％、枞形末期70％。 相似文献
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《Industrial Crops and Products》2001,13(3):239-248
Information is needed to optimize enzymatic-retting of flax (Linum usitatissimum L.) based on a pectinase-rich mixture and chelators. Seed flax straw from North Dakota in 1998, ‘Natasja’ fiber flax straw from South Carolina in 1993, ‘Ariane’ fiber flax straw field-aged and dried from South Carolina in 1999, ‘Ariane’ fiber flax straw shed-dried from South Carolina in 1999, and Canadian seed flax straw in 1997 comprised diverse samples that were subjected to various tests to improve absorption of enzyme formulation by stems or to evaluate clean fiber yield. Mechanical disruption by crimping stems through fluted rollers at about 80 Newtons gave optimum fiber yield in conjunction with enzymatic-retting and was, therefore, used in further tests to evaluate enzyme absorption. Enzyme absorption was increased significantly for uncrimped flax stems with increased pressure of about 310 kPa or with a vacuum around 88 kPa. Increased pressure was effective more than the vacuum treatment. Samples with minimal post harvest handling were affected more by pressure alterations than samples that had considerable disruptions, such as seed flax straw or field-aged straw. Crimped stems showed little increase in enzyme absorption with alterations in applied pressure. Mechanical treatment of stems by crimping gave the largest increase in enzyme absorption and increased significantly the fiber yields. Based on a variety of sample types, the results suggest that normal atmospheric conditions are satisfactory for penetration of enzyme formulation into crimped stems, and that extraordinary measures are not required to expedite the enzyme-retting process. 相似文献
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采用喷雾法对43个花生品种进行疮痂病抗性鉴定试验,以筛选出适合本地区种植的抗病品种。结果表明：43个花生品种对疮痂病的抗性差异可分为3类,中感(MS)的有7个,占16.28%;中抗(MR)的有28个,占65.12%,抗病(R)品种有8个,占18.60%。建议抗病性达到中抗(MR)以上的36个品种,可结合各地的生产条件和品种综合性状示范种植。 相似文献
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温度对水稻整精米率的影响 总被引：27，自引：0，他引：27
1988年利用5种类型的19个品种在全国不同地区13个试点进行了分期播种试验,结果表明,不同品种的整精米率具有不同的结实期日均温效应方程。据此将19个品种分为直线型和抛物线型,求得各品种整精米率对温度的灵敏度及最适温度,并接整精米率的灵敏度将14个抛物线型品种划分为灵敏型、中间型和迟钝犁。在最适温度方面,粳稻低于籼稻;籼稻中,迟熟品种低于低于中熟品种,中熟品种低于早熟品种。 相似文献
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为明确28个玉米品种苗期的耐重金属性和子粒对重金属的吸收特性，本研究通过测定重金属Cd、Pb、Cr、Zn、Cu单一胁迫对玉米幼苗株高等11个生理生化指标的影响，评价玉米幼苗对重金属的耐受性。通过测定不同玉米品种在四川省3个生态区的子粒重金属含量，评价子粒的重金属吸附特性。结果表明，根据苗期重金属耐受性可将28个玉米品种分为4类，其中瑞玉612和正红412为强耐重金属品种，正红818等13个品种为耐重金属品种，正红510等5个品种为中等耐重金属品种，中单808等8个品种为重金属敏感型品种。根据子粒对重金属的吸附特性可分为4类，正红205等12个品种子粒重金属含量最低，正红510等3个品种子粒重金属含量最高，瑞玉612等13个品种重金属含量处于中等水平。综合以上结果，正红818等13个品种的苗期重金属耐受性强，且子粒对重金属的吸附低，表明这些品种具有较高的推广应用安全性。 相似文献