| It is the important problem of guaranteeing agricultural sustainable development of suburb of Beijing to develop the water-saving orchard and improve the effective rate of utilization of water. The application of technology is a important economizing on water and fighting a drought and increasing the production of technology and is developed in recent years rapidly that the conservation storage preserves soil moisture, main two parts of contents of research of this text: With the new-type products KeHan98 high-efficient to fight a drought water retaining agent material , to to is it protect water characteristic , between water retaining agent and foundation that interaction study of fertilizer to absorb water water retaining agent, to carrying on research in the effect of using the water retaining agent of orchard of suburb of Beijing.Adopt the straw to cover technology and carry on research to the suburb of Beijing. In order to achieve the goal of studying, the author has promoted the research of tight test, pass the finding:(l)The water retaining agent absorb water ability correlate with density of ion of the solution , pH value ,etc. in KeHan98 , propose when using at the same time , on land earthworm is it is it is it construct to gush out to adopt to propose , should water with ink with water retaining agent.(2)Different water retaining agent is it can improve soil moisture and simple fruit fruit volume , fruit candy content of orchard to deal with.(3)The water retaining agent protects water result obviously, can all achieve the goal of economizing on water to the type in different rainfall year.(4)The straw can obviously improve soil moisture and question to cover, raise the speed of growth of the fruit. |