Study On Black Sloping Farmland Corn Conservation Tillage Technology Mode Application

Heilongjiang Province that reached1114.1billion kilograms of grain output in2011, rankingfirst in the country, is the major grain production bases. Recent years, over-farming damaged thefarming soil, resulted in the loss of soil moisture, and threatened the safety of agriculturalproduction. Conservation tillage can reduce runoff, increase soil moisture, and achieve the purposeof increasing production in the final. Conservation tillage technology modes (deep loosing, strawreturning, furrow damming) take3o slope farmland of Red Star Farm in Heilongjiang Province astest objects in2012. The test is divided into two parts of the plot experiments and field trials.Through observation and analysis of soil moisture dynamics, corn biological traits, rainfall, runoffof different conservation tillage modes, a comprehensive evaluation and research were made. Thefollowing conclusions:(1)The trial of four kinds of conservation tillage technology modes "deep loosing (SS), deeploosing+straw returning (SJ), deep loosing+straw returning+furrow damming (SLJ)""deeploosing+furrow damming(SL) for the period of the fertility corn plant height, leaf area index anddry matter accumulated have a positive impact. Indicators of the growth period of corn growthdynamics are superior to conventional tillage (CK). Before furrow damming building block in thegrowth of corn, a variety of conservation tillage technology mode influence order for conventionalfarming <deep loosing=deep loosing+furrow damming <deep loosing+straw returning=deeploosing+straw returning+furrow damming. Since furrow damming building block, it caneffectively impound runoff and promote the growth of the corn plant. From the entire growth periodof the corn growth, a variety of conservation tillage technology mode dynamic influencedescending order: deep loosing+straw returning+furrow damming> deep loosing+furrowdamming=deep loosing+straw returning> deep loosing=conventional tillage.(2) Four kinds of conservation tillage technology modes can increase soil moisture, cornoutput, and improve water use efficiency. Yield, soil moisture and water use efficiency depend onthe type of conservation tillage modes. Furrow damming for the fertility of the soil moisture havesignificant impact, and deep loosing+straw returning+furrow damming is the best in all modes,followed by deep loosing+furrow damming. The soil moisture content of deep loosing is thelowest in the four kinds of modes, but still better than conventional tillage. The order of corn outputand water use efficiency is consistent with the facts. It showed that conservation tillage modes havethe effect of water-saving yield.(3) Four kinds of conservation tillage modes can reduce runoff and the loss of soil moisture and nutrients. Reducing the runoff depends on types of conservation tillage mode. After furrowdamming building, the runoff is obviously reduced, and water storage capacity is increasing. Thetests showed that the single conservation tillage have some water and soil conservation jobs, two ormore of the conservation tillage, the mode integration has significantly reduced the role of erosionobviously.(4) The entropy of Fuzzy Matter-Element Model based on Entropy-Weight was applied toevaluate four conservation tillage technology modes, the order of the effect with conservationtillage modes: deep loosing+straw returning+furrow damming> deep loosing+furrowdamming> deep loosing+straw returning> deep loosing> conventional tillage.