陇东山地核桃抗旱保墒试验初报

Research on water conservaton techniques in drought soil of walnut planted in hilly area of Longdong

为了解决陇东山地核桃挂果晚、产量低、品质差的问题,2013—2014年连续2a于4—10月份在环县刘家塬项目区选择长势基本一致的3a生核桃幼树进行覆草、覆膜试验,定期、定点测定并记载土壤含水量和核桃树新梢生长量。结果表明:覆草较对照可提高土壤含水量12.70%,覆膜较对照可提高土壤含水量4.68%;通过对核桃树体生长量调查,覆草较对照树体年新梢生长量平均提高18.42%,覆膜较对照核桃年新梢生长量平均提高9.01%,其中覆草对土壤含水量和新梢生长量的影响最大。

In order to solve the problem of walnut in Longdong hilly area for late fructifica- tion, low yield and poor quality, our project team chose 3-year-old walnut young trees whose growth situations were basically the same as material. The experiments of grass and mulc- hing coverage were carried out from April to October in 2013 and 2014, in which the soil moisture content and young shoot growth were measured regularly. The results showed that： the covering grass can improve the soil moisture content for 12.70% than the contrast, and mulching can improve 4.68 %; through the survey of young shoot growth, the annual shoot growth increased by 18.42% on awerage by grass coverage and 9.01% by mulching cover- age. Therefore, the impact of covering grass on the soil moisture content and young shoot growth is the largest.