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托克逊县林业工作站苗圃,1958年培育了1.176亩榆树丰产试验田,获得了丰产,实产苗共60,144株,平均亩产达51,122株,其中一、二级苗占91.4％,合乎苗圃造林要求,废苗仅占2％。 试验田分两部份:一为等距条播,行距为30厘米,播幅宽5—8厘米(即播种沟宽度)6播行总长为895米。另一为三行带状垄播,行距为30厘米,带距为40厘米,播幅为8厘米左右,播行总长1,61,米。其两种不同播种方法所得苗木质量如附表。 试验田苗木实际生长期共139天,在生长期中主要气象条件如下: 平均气温:6月为29.2℃,7月为33.2℃,8月为30.4℃,9月为22.9℃。蒸发量6—9月为2,769.7毫米,而降雨量仅8.4毫米。苗木经受了85次7级以上旱风的危害,对苗木生长有一定的影响。单以9月27日一次大风,即使苗木梢部2厘米左右干枯。但是最後仍获得丰产。
In 1958, Nursery for Forestry Workstations in Toxon County was cultivated. In 1958, 1.176 mu of elm high-yielding experimental field was cultivated with a total yield of 60,144 seedlings. The average yield per mu reached 51,122, of which 91.4% were primary and secondary seedlings, which was in line with afforestation requirements of nursery , Waste seedlings accounted for only 2%. The experimental field is divided into two parts: one is equidistant cutting, the spacing is 30 cm, the width of sowing is 5-8 cm (the sowing width) 6 The total length of broadcasting is 895 m. The other is a three-lane banded ridge, spacing of 30 cm, with a distance of 40 cm, sowing about 8 cm, the total length of 1,61 m. The quality of seedlings obtained from two different sowing methods is given in the attached table. Experimental field seedlings of the actual growth period of 139 days, the main meteorological conditions in the growing season are as follows: The average temperature: June 29.2 ℃, July 33.2 ℃, August 30.4 ℃, September 22.9 ℃. The evaporation in June-September was 2,769.7 millimeters, while the rainfall was only 8.4 millimeters. Seedlings have been exposed to more than 85 levels of drought 7 above the damage, the growth of seedlings have a certain impact. A single strong wind on September 27, even if the seedlings shoot 2 cm or so dry. But in the end still get a high yield.