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信宜县是个“八山一水一田”的山区县。耕地面积少,山区林农有利用旱坡地培育杉木苗的历史习惯。但因旱坡地水土流失较严重,养分淋溶流失大,对苗木生长极为不利。为使苗木生长迅速,能提早形成一个庞大健壮的根系,达到一年出圃的优质壮苗标准,我们自1978年以来,在新堡区林场和乡林场,连续几年进行了使用磷酸二氢钾溶液喷施杉苗的试验,均在当年秋季进行检查,效果良好。现小结如下。一、试验方法和用药量在苗圃地内选
Xinyi County is a “eight mountains and one water field” mountain counties. Small area of arable land, mountain farmers have the use of dry land to cultivate the history of Chinese fir seedlings. However, because of the more serious soil erosion on the slopes, nutrient leaching loss is large and the growth of seedlings is extremely unfavorable. In order to make the seedlings grow rapidly, we can form a large and robust root system earlier and reach the standard of quality strong seedlings in a year. Since 1978, we have been using potassium dihydrogen phosphate The solution of spraying fir seedlings test, were in the autumn to check, the effect is good. Now summarized as follows. First, the test methods and dosage in the nursery selection