论文部分内容阅读
２６株快生型大豆根瘤菌（Ｒ．ｆｒｅｄｉｉ）与我国２５个栽培大豆品种共生试验表明：Ｒｆｒｅｄｉｉ能与我国栽培大豆有效共生，固氮酶活性（Ｃ２Ｈ４）一般在３～６ｎｍｏｌ．Ｌ（－１）．ｇ（－１）．ｈ（－１），接种在跃进５号、山宁２号、鲁豆４号、民权圆蛋粒和上海早毛豆等品种上共生效果与慢生型大豆根瘤菌Ｂ．ｊａｐｏｎｉｃｕｍ１５００６（Ｐ．Ｒ．Ｃ．００５）相当或超过之。但Ｒ．ｆｒｅｄｉｉ对大豆品种的选择性更明显，２６个菌株的接种有效率平均为４９％，其中１５０６７（ＵＳＤＡ１９１）为８９％。４株Ｒ．ｆｒｅｄｉｉ接种在夏大豆跃进５号、鲁豆４号和山宁２号上的田间小区实验每亩增产大豆１０．６～３２．１ｋｇ，增产幅度９．４％～３１．４％。大田接种平均每亩增产大豆２２．１ｋｇ。
The symbiosis experiments of 26 fast-growing R.fredii with 25 cultivated soybean varieties in China showed that Rfredii could coexist with cultivated soybean in our country, and the nitrogenase activity (C2H4) was generally 3 ~ 6nmol. L (-1). g (-1). h (-1). The symbiotic effect was on the symbiotic effect with the slow-growth soybean rhizobia B on Yuejin 5, Shanyin 2, Luodao 4, Dfn and Shanghai early soybean. japonicum15006 (P.R.C.005) is equivalent to or over. But R. The selectivity of fredii to soybean varieties was more pronounced. The average inoculation efficiency of 26 strains was 49%, of which 15067 (USDA191) was 89%. 4 strains R. Fredii inoculation in summer soybean Yuejin 5, Luding 4 and Shanning 2 field experiment per mu yield of soybean 10.6 ~ 32.1kg, yield increase of 9.4% to 31.4%. Otsuka inoculation average soybean yield 22.1kg.