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自20世纪90年代以来,随着产业结构的调整和人民生活水平的不断提高,烟台市杏树面积不断扩大。据2001年有关部门统计,全市杏园面积达到5300hm~2,成为发展壮大农村经济的支柱产业之一。据调查,有4280hm~2杏园土壤为棕壤性土,占总面积80％以上。由于所处的地形部位高、土质较差,导致产量低而不稳,每667m~2杏产量一直在200kg上下徘徊。为进一步提高产量及经济效益,1997～2001年笔者进行了大面积覆草试验,每667m~2比对照田增产202.5kg,增加收入303元。现简报如下。
Since the 90s of the 20th century, with the adjustment of industrial structure and continuous improvement of people’s living standards, the area of almond trees in Yantai has been constantly expanding. According to statistics from relevant departments in 2001, the area of apricot garden in the whole city has reached 5300hm ~ 2, making it one of the pillar industries for developing and expanding the rural economy. According to the survey, 4280hm ~ 2 apricot garden soil is brown soil, accounting for more than 80% of the total area. Due to the high terrain, poor soil quality, resulting in low yield and instability, apricot yield per 667m ~ 2 has been hovering around 200kg. In order to further improve the yield and economic benefits, from 1997 to 2001, the author carried out a large area of grass cover test, yielding 202.5kg per 667m ~ 2 compared with the control field, increasing the income by 303 yuan. Now briefing as follows.