Effects Of Mulch Cultivation On Soil Environment And Yield Of Potatoes With Different Ripeness

Straw belt mulch can not only improve crop yield,but also provide a new way for the effective utilization of straw resources.This thesis mainly studies the straw belt cover of early maturity varieties,a new number and variety of gansu po tato varieties of seven production and the influence of soil moisture and soil temperature,so as to reveal the straw strip to cover the cause of the production,application for this technology to provide scientific basis and theoretical basis.This experiment included 6 covering treatments including mulch and straw belt mulch of 5 different planting methods.Compared with bare planting,the main research results of this experiment are as follows:1.Straw mulch planting potatoes can significantly increase the average soil water content of 0-200 cm,and its water storage effect is better than double furrow black film mulch.During the growing period of potatoes,straw mulch has better effect on the conservation of moisture of late maturity varieties of longt uber 7 than early maturity varieties of kexin 1.2.Potato in the whole growth period of water mainly consumption by precipitation,the new number one in early maturity varieties,cultivation,crushed stalk cover all outdoor contrast significantly increased the proportion of consumption of precipitation,the 14.9% difference,variety of potato cultivation,double the highest ditch under the black film of farmland water,farmland water lowest whole stalk to cover wide strip line.3.Straw mulching in g a new number and the whole growth period of gansu potato seven with different degree of cooling effect,in the early maturity varieties,the new one,straw strip line from mulch is most obvious,reduces the 1.15 ?,the outdoor was reduced by 0.5 ?.Late varieties in gansu potato 7 broken rod covered by the membrane decreased 2.1 ?,the outdoor was reduced by 0.42 ?.4.Straw strip mulch treatment has obvious effect on early and late maturity potato yield increase.Good soil moisture is the precondition of high yield,is conducive to the emergence and potato tuber bulking,can increase the potato for potato,increase the potato weight per plant,the final was beneficial to the improvement of the potato production.