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10%多·甲可湿性粉剂在花生上的应用研究 总被引:4,自引:0,他引:4
20 0 0~ 2 0 0 1年的研究表明 ,在花生盛花末期喷施 1 0 %多·甲可湿性粉剂对花生安全 ,能够有效控制花生徒长 ,提高单株结果数、饱果率等 ,增加荚果产量 ;喷施多·甲可湿性粉剂对花生外观品质及籽仁中粗蛋白、粗脂肪的含量等没有明显影响 ,可溶性糖的含量增加 ,油酸 /亚油酸比值提高 ,有利于提高籽仁的内在品质。在花生上应用以 1 2 0~ 1 65ga .i./hm2 为适宜用量 ,控长、增产效果最为显著 ,增产幅度为 9.0 3 %~ 1 3 .2 6% ,用量超过 1 65 ga .i./hm2 ,对花生的控长作用增强 ,但容易导致花生早衰 ,加重后期叶部病害程度 ,不利于荚果产量的提高 相似文献
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棉花生长后期 ,根系对养分的吸收功能明显减退 ,这时喷施叶面肥补充营养 ,具有防早衰、防病害、攻大桃、争优质的作用 ,增产增收效果显著。1喷氮防早衰叶面喷施氮素营养 ,可使叶片保持绿色 ,增强光合作用 ,防止脱氮早衰 ,与调节剂 80 2混合喷施 ,增产效果更为明显。应在 8月下旬至 9月上旬 ,用1 0 0倍的尿素与 40 0 0倍 80 2混合溶液喷施 ,每隔 5~ 7天喷施 1次 ,连喷 2~ 3次 ,每次每公顷喷肥液1 1 2 5 kg。2喷钾防病害开花结铃期缺钾易发生红叶茎枯病 (凋枯病 ) ,发病后 ,棉叶变为红色或黄色 ,变厚且皱缩易脆 ,最后脱落 ,引起棉株早衰 ,可… 相似文献
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抗青枯病花生新品种粤油200的选育研究 总被引:7,自引:1,他引:7
:粤油 2 0 0是广东省农科院作物研究所用 (粤油 1 87×粤油 92 ) F1 为母本 ,(粤油 3 2 0 -2 6×粤油 92 ) F1 为父本通过复合杂交选育而成。 1 988~ 1 990年全国南方片花生品种区域试验 (抗病组 )平均产量 3 0 84 .1 5kg/ hm2 ,比 CK1 粤油 92增产 1 7.3 2 %,比 CK2 粤油 1 1 6增产 4 7.2 6%。在人工接种试验中 ,青枯病发病率为6.6%。 相似文献
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目前中国大麦总产的 70 %左右用于饲料 ,因此培育高产优质的饲料大麦新品种意义重大。饲料大麦新品系 97- 1 1 7是我所于1 994年采用杂交后代“940 572”( 90 44×岗 2 )为母本 ,“94396 4”[( 841 6 5×成城 1 7)×沪麦8号 ]为父本杂交 ,经过 3年当地及异地 (云南夏繁 )的连续选择 ,1 997年进入鉴定圃 (比对照品种沪麦 1 0号增产 5 7% ) ,1 998年升入品比圃 (比对照品种沪麦 8号增产32 3% ) ,1 999年参加上海市区域试验 ,2 0 0 0年继续参加上海市区域试验及生产试验 ,表现优异 。1 区域试验及生产试验结果1 999年上海市区域试验 ,该品系 … 相似文献
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磁化肥是近几年来开发的一种新型高效肥料 ,具有独特磁化作用。为了验证其在水稻基施条件下应用的增产效果 ,为在白僵盐碱插花地上施用磁化肥提供科学依据 ,2 0 0 0年我场在水稻上进行了应用试验。现将试验结果总结如下 :1 材料与方法1 1 试验条件试验地设在农场 7队 8号地 ,土壤肥力水平中等 ,前茬作物水稻 ,土壤有机质0 70 2 % ,土壤碱解氮含量 47 3× 1 0 -6,速效磷 1 3 1× 1 0 -6,速效钾 77 5× 1 0 -6,土壤含盐量 1 87% ,pH值为 8 63。1 2 试验材料供试品种 :宁夏国有农场主栽品种———宁粳 1 2号。供试肥料 :由宁夏平罗县… 相似文献
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针对豫北地区的大豆生产现状,从气候、土壤、品种、生态因素及市场需求等方面提出了优质大豆的发展策略与途径。 相似文献
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以长沙县高桥相同嫩度茶鲜叶原料采用卷曲形毛尖茶加工工艺制绿茶为对照,分别对沅陵县齐眉翠峰、凤娇碣滩茶、干发茶和军大坪茶4种绿茶的主要生化成分与感官品质进行初步分析。结果表明,沅陵4种绿茶的茶多酚总量28.76%~30.34%,游离氨基酸总量2.35%~3.22%,咖啡碱含量3.00%~3.63%,水浸出物含量37.26%~40.07%,可溶性糖总量5.46%~5.65%,可溶性蛋白含量1.50%~1.74%,类黄酮化合物总量1.16%~1.79%,叶绿素总量1.36%~2.01%,儿茶素总量13.53%~16.20%。与对照相比,4种绿茶的茶多酚、可溶性糖和儿茶素总量均高于对照,除齐眉翠峰外其余3种茶样水浸出物和叶绿素总量均高于对照,除干发茶外其余3种茶样类黄酮化合物总量均高于对照。 相似文献
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Irrigation of Netted Gem potatoes was scheduled during three growing seasons by three methods: (a) when plants displayed first visual symptoms of moisture stress, (b) when indicated by a soil moisture budget involving estimated evapotranspiration, and (c) on the basis of tensiometer readings of soil moisture suction. When the tensiometer method of scheduling was used, the mean yields of tubers were 55.0 and 25.8 cwt/acre (6160 and 2890 kg/ha) higher than those obtained with the other two scheduling methods. Methods did not affect the specific gravity of potatoes. Method (a) scheduled irrigations least frequently. Scheduling by the budget method was not always adequate because it was based on the assumption that the crop extracted water from a constant 4 ft (1.2 m) profile from planting to full vegetative growth. In one year the budget method scheduled the first irrigation earlier than necessary and delayed the second irrigation during a critical period of crop growth. From full vegetative cover to harvest the irrigation schedules were alike for both the budget and tensiometer methods. 相似文献
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1 吉林省平安农业科学院大豆研究工作简介吉林省平安农业科学院大豆研究所 ,设在吉林省长春市西安大路种子大厦内。现有科技人员 6人 ,其中研究员 2人 ,农艺师 2人 ,技术员 2人 ,定向培养研究生 2人。大豆研究所的主要任务是选育稳产、高产、优质及抗病虫大豆新品种 ;同时密切 相似文献
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Sena L.P. VanderJagt D.J. Rivera C. Tsin A.T.C. Muhamadu I. Mahamadou O. Millson M. Pastuszyn A. Glew R.H. 《Plant foods for human nutrition (Dordrecht, Netherlands)》1998,52(1):17-30
In the western Sahel, indigenous plants become important staples when cereal harvests are inadequate to support populations inhabiting that region of Africa. The purpose of this study was to assess the nutrient content of several of these edible wild plants. The leaves of the following seven plant foods were analyzed: Ziziphus mauritiana, Cerathotheca sesamoides, Moringa oleifera, Leptadenia hastata, Hibiscus sabdarifa, Amaranthus viridi, and Adansonia digitata. The fatty acid, vitamin E, carotenoid, selected mineral and amino acid contents of these plant foods were determined. These same analyses were performed on the fruit of the Adansonia digitata. In quantitative and qualitative terms, Amaranthus viridis was found to be an excellent source of protein. Its amino acid composition compared favorably to that of a World Health Organization (WHO) protein standard. It also contained considerable amounts of the two fatty acids that are essential in humans (linoleic and -linolenic) and a number of minerals including iron, magnesium, calcium and zinc. The leaves of Hibiscus sabdarifa contained an appreciable quantity of protein the composition of which was comparable to the WHO standard. The mineral content of the leaves of this plant was also exceptionally high; noteworthy was its high zinc content. H. sabdarifa also contained significant quantities of the two essential fatty acids. Ziziphus mauritiana was an excellent source of the essential fatty acid linoleic acid and several of the metals including iron, calcium, magnesium and zinc. Its content of other essential nutrients, however, was rather low. In general, Adansonia digitata leaves were nutritionally superior to the fruit of the tree; however, the fruit did contain useful quantities of potassium, phosphorus, zinc and -linolenic acid. The Leptadenia hastata leaves were an especially good source of lutein and -carotene. These data should be useful to the people who inhabit the western Sahel in helping them devise healthy diets during times when cereal staples are in short supply. 相似文献
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通过电解质外渗法和匍匐茎恢复试验对‘阳江’狗牙根及其12个通过形态鉴定选出的坪用价值高且花序密度低的诱变后代进行抗寒性鉴定。电解质外渗法结果表明:诱变后代间的抗寒性具有较大差异,其叶片半致死温度(LT50)的变异范围为-7.6~-0.2℃(最低值与最大值相差7.4℃);参试材料抗寒性由强到弱依次为M18>M4>M26>M28> M22>阳江>M29>M31>M10>M37>M16>M1>M25,其中,有5个诱变后代抗寒性优于亲本,分别是M18、M4、M26、M28、M22。匍匐茎恢复实验结果表明:诱变后代M1、M22、M26、M31、M25在0℃和-5℃低温胁迫后的恢复生长率都高于亲本,恢复能力均优于亲本;M10、M37、M28在-5℃低温胁迫下,恢复生长能力低于亲本,抗寒性相对较弱,M16和M4在0℃和-5℃低温胁迫下,恢复生长率都低于亲本,抗寒性明显弱于亲本。综合2种方法鉴定结果显示:诱变后代M1、M25的恢复能力较强;M4、M28的叶片抗寒性较好,青绿期较长;M22、M18、M26的叶片抗寒性和匍匐茎恢复能力均较强;M29,M31的叶片抗寒性和匍匐茎恢复能力与亲本相似;M10、M16、M37的叶片抗寒性和匍匐茎恢复能力均较弱,整体抗寒性较弱。 相似文献
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实施茶叶优势区域规划促进川茶产业持续发展 总被引:1,自引:0,他引:1
为了充分发挥四川茶叶的比较优势和自然资源优势,进一步提高川茶产业竞争力和促进农民增收,在四川省委、省政府重视下,在开展特色茶叶产品研究的基础上,制订了<四川省茶叶优势区域规划>,以期通过"规划"的实施,在基地建设、规模化生产、产业化经营等方面取得新的突破,为四川省盆周山区和丘陵地区的农村经济发展和农民增收做出新的更大贡献. 相似文献