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为了解紫花苜蓿草地年产量,在石林建植的紫花苜蓿草地随机选择2个测产点,每个点2个小区,测产面积1 m~2,共4个测产小区。测产每月底进行,施维持肥量按1 200kg/hm~2进行,即每个季度施肥1次,分别于3、6、9和12月底施于维持肥,每次施肥量300kg/hm~2,即每次每个小区30g。测定产量的同时还测定植株高度。结果年总产量99 677.5kg/hm~2,平均株高84.04 cm,1-11月的生长高度基本是一致的。
In order to understand the annual yield of alfalfa grassland, two measuring points were randomly selected in alfalfa grassland planted in Shilin, with 2 plots per locus, with an area of 1 m ~ 2 and a total of 4 measuring and producing plots. Measured at the end of each month, Shi Wei to maintain the amount of fertilizer by 1 200kg / hm ~ 2, that is, each quarter fertilization 1, respectively, at the end of 3,6,9 and 12 are applied to maintaining fertilizer, each fertilizer 300kg / hm ~ 2, that is, each cell 30g. The plant height was also determined at the same time as the yield. Results The annual total yield was 99 677.5kg / hm ~ 2 and the average plant height was 84.04 cm. The growth height from January to November was basically the same.