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为探讨PP_(333)在辽宁条件下对不同树种、品种、树龄、树势等的效应,特开展了本项研究。经过1986年的开题准备,1987年正式建立了全省协作网,开展多点试验。有大连、营口、鞍山、锦州、朝阳、锦西、丹东等7个市及其新金、旅顺、甘井子、金州、瓦房店、庄河、盖县、营口、海城、绥中、兴城、朝阳、喀左、东沟等14县(区)参加。我们采取边试
This study was conducted to investigate the effect of PP 333 on the effects of different tree species, species, tree age and tree vigor under the conditions of Liaoning. After the opening preparation of 1986, 1987 formally established the province’s network of cooperation, carry out more experiments. There are seven cities including Dalian, Yingkou, Anshan, Jinzhou, Chaoyang, Jinxi and Dandong and their seven cities including Xinjin, Lushun, Ganjingzi, Jinzhou, Wafangdian, Zhuanghe, Gaixian, Yingkou, Haicheng, Suizhong, Xingcheng, Chaoyang, Kazuo, Donggou 14 counties (districts) to participate. Let’s take a test