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为了探索增产菌在苹果个同生育时期及不同喷施次数的最佳增产、防病效果,我们于1992年引进北京农业大学植物生态工程研究所研制的增产菌进行了试验。现将试验结果初报如下。一、材料与方法1.试验在本场苹果园进行。园地位于靖远县境内黄河岸河谷阶地上,海拔1460～1540m;年均气温9℃,年日照时数2755.3小时,≥10℃年积温为3220℃,无霜期190天;年降水量243.1mm,蒸发量1780mm,有灌溉条件;土壤属淡灰钙土,pH值5.3～8.2。2.供试菌剂为苹果专用增产菌可湿性粉剂(每克含50亿芽孢杆菌)。供试树选择生长类型、生长势
In order to explore the best yield increase and disease-prevention effect of increasing bacteria in the same growth period and spraying times of apple, we conducted experiments in 1992 to introduce the increasing bacteria developed by Institute of Plant Ecology Engineering of Beijing Agricultural University. Now test results are as follows. First, the materials and methods 1. The test in the field orchard. The park is located in Jingyuan County, the Yellow River valley terrace, elevation 1460 ~ 1540m; average annual temperature of 9 ℃, the annual sunshine hours of 2755.3 hours, ≥ 10 ℃ accumulated temperature of 3220 ℃, frost-free period 190 days; annual precipitation of 243.1mm, evaporation The amount of 1780mm, irrigation conditions; soil is light gray earth, pH value of 5.3 ~ 8.2.2. The test agent for the production of apple-specific bacteria wettable powder (per gram Bacillus 5 billion). Test trees to choose the type of growth, growth potential