池杉(池柏)为国外引进树种,现栽培长江流域华中、华南数省平原河网湖区,表现良好,是优良的速生用材,护岸、农田防护树种,深受群众喜爱,各地要求积极推广,对种苗需要也日益迫切。当前,在池杉实生苗繁殖过程中,单位面积播种量和产苗量应以多少为好?苗木质量指标应如何划分?意见尚不一致。遵照毛主席“古为今用,洋为中用”和“一切结论产生于调查情况的末尾,而不是在它的先头”的教导,1974年冬,我们对武汉东湖梨园、磨山两苗田一年生池杉实生苗进行了调查,现将调查结果整理如下。 Ipomoea batungensis is a species introduced from abroad and is now cultivated in the central part of the Yangtze River Valley in central China and the southern part of China. It is an excellent species for fast-growing timber, bank protection and farmland protection. It is favored by the masses and is actively promoted throughout the country. The need for seedlings is also increasingly urgent. At present, in the mycelial fir seedling propagation process, the unit area of ​​?? sown and the amount of seedlings should be as good? Seedling quality indicators should be divided? Opinion is not consistent. Following Chairman Mao’s teachings of “ancient for today and foreign for intermediate use” and “all conclusions come from the end of the investigation, not from its beginning”, in the winter of 1974, we gave birth to the annual tree ponds of Donghu Pear, Miao conducted a survey, the findings are summarized below.