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首页> 外文期刊>Agricultural Water Management >Soil texture, climate and management effects on plant growth, grain yield and water use by rainfed maize-wheat cropping system: Field and simulation study
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Soil texture, climate and management effects on plant growth, grain yield and water use by rainfed maize-wheat cropping system: Field and simulation study

机译：旱作玉米-小麦种植系统的土壤质地，气候和管理对植物生长，谷物产量和水分利用的影响：田间和模拟研究

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摘要

In sub-mountain tract of Punjab state of India, maize (Zea mays, L.) and wheat (Triticum aestivum L.) crops are grown as rainfed having low crop and water productivity. To enhance that, proper understanding of the factors (soil type, climate, management practices and their interactions) affecting it is a pre-requisite. The present study aims to assess the effects of tillage, date of sowing, and irrigation practices on the rainfed maize-wheat cropping system involving combined approach of field study and simulation. Field experiments comprising 18 treatments (three dates of sowing as main, three tillage systems as subplot and two irrigation regimes as the sub-subplot) were conducted for two years (2004-2006) and simulations were made for 15 years using CropSyst model. Field and simulated results showed that grain yields of maize and wheat crops were more in early July planted maize and early November planted wheat on silt loam soil. Different statistical parameters (root mean square error, coefficient of residual mass, model efficiency, coefficient of correlation and paired t-test) indicated that CropSyst model did fair job to simulate biomass production and grain yield for maize-wheat cropping system under varying soil texture, date of planting and irrigation regimes.
机译：在印度旁遮普邦的山下地区，玉米（Zea mays，L.）和小麦（Triticum aestivum L.）的作物以雨养方式生长，作物和水分生产率较低。为了增强这一点，对影响它的因素（土壤类型，气候，管理实践及其相互作用）的正确理解是先决条件。本研究旨在通过田间研究和模拟相结合的方法，评估耕作，播种日期和灌溉方式对雨养玉米-小麦种植系统的影响。进行了两年（2004-2006年）的现场试验，包括18种处理方式（3个播种日为主要播种，3个耕作系统为亚样区，2个灌溉制度为亚子区），并使用CropSyst模型进行了15年的模拟。田间和模拟结果表明，在粉壤土上种植的玉米和7月上旬的玉米和小麦作物的谷物产量更高。不同的统计参数（均方根误差，残留质量系数，模型效率，相关系数和配对t检验）表明，CropSyst模型在模拟土壤质地变化的玉米-小麦种植系统中能很好地模拟生物量生产和谷物产量，种植日期和灌溉制度。

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