共查询到20条相似文献,搜索用时 15 毫秒
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植物源调节剂是利用豆科和菊科植物为原料 ,首次研制的一种植物生长调节剂 ,对玉米萌发有促进作用 ,尤其表现在促进根生长。在苗期、拔节期叶面喷施 ,提高生物产量 2 1 4 3% ,增加千粒重 4 2 0g ,增产率2 1 95 %。使用浓度为 80× 10 -3 g/L或 10 0× 10 -3 g/L使用方法是拌种和苗期、拔节喷施 相似文献
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THE EFFECT OF CATIONS ON THE GROWTH OF FUNGI 总被引:6,自引:5,他引:1
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SUMMARY Observation of natural blooms of Microcystis, suggested that increased turbulence plays a role in retarding bloom formation of Microcystis. In laboratory experiments the influence of turbulence mediated by a magnetic stirrer on the growth and viability of Microcystis in batch cultures was determined. The different turbulences (0, 25, 75, 126, 209 and 314 cm sec?1 linear velocity) had no effect on the growth rate. There was a highly significant correlation between the linear velocity and percentage viability as determined by a plating and serial dilution method. The viability ranged from 0,8% for stationary cultures to 99,2% for vigorously stirred (314 cm sec?1 linear velocity) cultures. 相似文献
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STUDIES ON THE GROWTH OF EXCISED ROOTS 总被引:4,自引:4,他引:0
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STUDIES ON THE GROWTH OF EXCISED ROOTS 总被引:1,自引:1,他引:0
WILLIAM G. BOLL 《The New phytologist》1954,53(2):177-202
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STUDIES ON THE GROWTH OF EXCISED ROOTS 总被引:2,自引:2,他引:0