Study On Cropland Planning And Design Management For The National Commodity Grain Planting

To ensure the national food security, the major grain production areas with grainproduction a dvantages, supplying commodity grain steadily and c ontiguousdistribution in regions are planning and constructed in our country. One of the highquality a nd yi eld c onditions of t he national c ommodity grain is the appropriateclimate c onditions, gr ound surface levelling and f avorable soil conditions. I n thispaper, the grain cultivation technology, engineering management theory and systemanalysis m ethod are ap plied, to analyse the cropland improvement planning anddesign management for the national commodity grain planting, of which the theoryand method are proposed, and used in the actual project of Dongtun Town, HenanProvince.â'ˆBased on t he analysis of cropland system, the climate, s oil a nd gr oundconditions are expounded,13indexes are put forward, and the combined weights ofeach index are de termined; Then the c ropland suitability selection model isestablished using the excellent degree evaluation method and matter-element model inextenics, and the fields which meet the requirements of food planting are ranked, toselect the fields which are suitable for grain planting and with high improvementdegree, considering the possibility of land improvement.â'‰On the basis of analyzing the field levelling activities and the surface levelingaccuracy requirement, the field leveling design proposals are put forward, and theearthwork allocation of field leveling is designed after the analysis of the constructionmethod, quantities calculation and construction machinery selection for field levelingengineering, t hen the scheme opt imization and calculation are pro cessed by thetransportation problem solution, in order to realize the purpose of field leveling andfertility maintaining with minimal input.â'ŠOn the basis of analyzing the cropland soil improvement activities, the designindexes of soil improvement are proposed, then the corresponding physical, chemical,and biological measures are taken to eliminate or prevent all kinds of adverse factorsaffecting crop growth and development, the improvement schemes about soil layer,soil te xture, soil structure, a cid a nd a lkaline a nd or ganic matter c ontent are putforward, a nd the design schemes of soil improvement is opt imized using the0-1integer programming model.