内蒙古黄土高原秸秆还田对土壤养分特性及玉米产量的影响

doi:10.3969/j.issn.2096-1197.2019.04.09

Abstract

Abstract: In view of the actual problem in the loess plateau region of Inner Mongolia such as unreasonable straw resource utilization and low utilization ratio,straw returning directly plot test in Qingshuihe was carried out.Under the probe into 0,3 000,6 000,12 000 kg/hm² returning the amount of soil organic matter,the total amount of nutrients,the available nutrient and the yield change rule were studied,to clear straw returned to the effect of maize farmland soil nutrient and crop yield.The results showed that different straw mulching quantities had significant effects on soil nutrients.The straw mulching increased the content of soil organic matter,total nitrogen,total phosphorus,and total potassium,and slowed down the consumption of alkali-hydrolyzed nitrogen,available phosphorus,and available potassium.The biological yield and grain yield of 3 000,6 000,12 000 kg/hm² were increased by 9.3%,13.1%,10.1% and 8.5%,11.4%,9.3%,respectively,compared with control.In conclusion,straw mulching can enrich soil and improve crop yield,and 6 000 kg/hm² has the best effect,which can be used as a cultivation mode to improve the quality and efficiency in the loess plateau of Inner Mongolia.

Key words: Loess plateau, Returning straw to field, Maize, Soil nutrients, Yield

CLC Number:

S318

GAO Riping, ZHAO Sihua, GAO Yu, HAN Yunfei, REN Yongfeng, ZHAO Peiyi. Effects of straw mulching on soil nutrient characteristics and maize yield in loess plateau of Inner Mongolia[J].Journal of Northern Agriculture, 2019, 47(4): 52-56.

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Effects of straw mulching on soil nutrient characteristics and maize yield in loess plateau of Inner Mongolia

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