复式沟地土壤水分效应对丘陵红壤杂交桑生长影响的研究

INFLUENCE OF SOIL MOISTURE EFFECT OF THE DOUBLEFURROW PROJECT ON THE GROwTH OF CROSS-MULBERRY IN THE HILLY RED SOIL

本文研究复式沟地土壤水分效应对桑叶产量的影响，并着重研究伏旱土壤水分变化与杂交桑生长的关系。试验结果表明，复式沟地对土壤水分的调控效果显著，与坡地（ＣＫ，下同）相比，土壤含水量，０～１５ｃｍ土层平均多３１．３ｇ／ｋｇ，１５～３０ｃｍ土层平均多２１．９ｇ／ｋｇ，杂交桑成活率提高４．７９％，主于高生长增长３０．３５％，桑叶产量增力０２９．８０％。因而复式沟地的保墒措施，为合理开发利用红壤，大面积在丘陵红壤上发展桑园提供科学依据。

This paper deals with the influence of soil moisture effect of the double furrow project Onmulberry-leaf yield, emphatically the relation between the growth of cross-mulberry and thechange of soil moisture content in hot and dry season. The results show that the soil moisturecontent is effectively regulated by the double furrow project. The soil moisture content of thedouble furrow land is greater than that of sloping fields,i. e by 31.1g/kg in the 0～15cmsoil horizon and by 29.1g/kg in the l5～30 cm soil horizon on the average. The survival rateof cross-mulberry raise by 4.79%, The growth of the main trunk height increases by30. 35%. The yield of mulberry-leaf increases by 29.80%, Therefore, the measure of pre-serving the soil water by the double furrow project provides a scientific basis for the rationalexploitation and utilization of the red soil and the development of mulberry-orchards in hillyredsoil areas.