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首页> 外文会议>A Project Workshop on Efficient Nutrient Use in Rice Production in Vietnam Achieved Using Inoculant Biofertilisers >Interaction effects of BioGro with nitrogen and phosphorus on grain yield and nutrient uptake of rice in light-textured soils of southern Vietnam
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Interaction effects of BioGro with nitrogen and phosphorus on grain yield and nutrient uptake of rice in light-textured soils of southern Vietnam

机译：Bioo的相互作用与氮素和磷对越南南部浅纹理土壤籽粒产量及养分产量的影响

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Three field experiments were conducted to evaluate the effects of the multistrain inoculant biofertiliser BioGro (two formulations: BioGrol and BioGro2) on yield and nutrient uptake of rice under variable rates of nitrogen (N) and phosphorus (P) fertilisers. The first experiment near Cu Chi was conducted during the first rainy season in 2004 using BioGrol with four N rates (0, 40, 80 and 120 kg N/ha) with the test rice variety LVN 95-20. The second experiment was conducted with Trau Nam rice during the first and second rainy seasons in 2006 using BioGro2 with five N rates (0, 30, 60, 90 and 120 kg N/ha). The third experiment, also with Trau Nam rice, was conducted during the first and second rainy seasons in 2006 using BioGro2 with four P rates (0, 10, 30 and 60 kg P_2O_5/ha). The estimated grain yield response of LVN 95-20 rice to added N was quadratic in nature both with and without BioGrol. BioGrol outyielded the control at all rates of added N. Estimated grain yield response of Trau Nam rice to added N was also quadratic in nature in both seasons. BioGro2 outyielded the control, with a potential to save 43 kg N/ha as well as an increased grain yield of 270 kg/ha in two consecutive seasons; in general, when BioGro2 was applied, the same yield was achieved with about 50 kg urea-N/ha less than the approximately 100 kg urea-N/ha required to achieve maximum yield in the absence of BioGro. In contrast to the first season, BioGro gave consistent yield increases at all rates of N in the second season, suggesting a seasonal influence on the effectiveness of BioGro. The effect of BioGro2 on P uptake was not significant in this experiment in the first season but was significant in the second season. These results provide convincing evidence of the capacity of BioGro to improve the efficiency of use of both N and P by rice.
机译：三个场进行实验以评价multistrain接种生物肥料BIOGRO的（两种制剂：BioGrol和BioGro2）的影响产量，并在氮气可变速率（N）和磷（P）肥料大米的养分吸收。邻近芝第一实验在第一雨季在2004年使用BioGrol与四个N个评分（0，40，80和120公斤/公顷）与试验水稻品种LVN 95-20进行。第二个实验用TRAU南大米在第一和第二雨季在2006年使用BioGro2具有五个氮水平（0，30，60，90和120公斤/公顷）进行。第三个实验中，也与TRAU南大米，是在第一和第二雨季在2006年使用BioGro2具有四个磷用量（0，10，30和60公斤P_2O_5 /公顷）进行。 LVN 95-20水稻对加入N估计的产量的反应是在具有和不具有BioGrol性质二次的。 BioGrol产量超过控制在TRAU南水稻对加入N添加N.估计产量响应的所有速率也是在自然界中两个季节二次的。 BioGro2产量超过控制，具有潜在的节省43公斤N /公顷以及在两个连续的季节270公斤/公顷的增加的产量;在一般情况下，当施加BioGro2，相同的产率，用约50公斤尿素-N来实现/公顷，以实现在不存在BIOGRO的最大产率小于约100公斤尿素-N /公顷必需的。与此相反的第一个赛季，BIOGRO了在N的所有利率保持一致产量增加的第二个赛季，这对BIOGRO有效性的季节性影响。 BioGro2对磷的吸收效果是不是在这个实验中的第一个赛季显著但在第二个赛季显著。这些结果提供了令人信服的BIOGRO改善同时使用N个的水稻的效率和P的能力的证据。

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