Effect of Different Technological Measures on Utilization of Precipitation and Soil Nutrients

doi:10.3321/j.issn:1000-7091.2005.06.019

Abstract

Abstract: The effect of different technological measures on the utilization of precipitation was studied in dryland in the west of Henan Province in this article.The results showed it played an active role in development and growth,yield,soil moisture and precipitation utilization of corn by different technological measures.The yield of corn were improved 1.92% to 20.51%,the best ones were the treatments of straw mulch and nutrient water-retaining agent combination,which increased 15.38% to 20.51%,the second ones were the treatments of nutrient water-retaining agent,that augmented 11.53% to 14.10%.The efficiency of precipitation ut ilization was improved 0.45kg/ ( mm·ha) to 3.60kg/ ( mm·ha) respectively; the best ones were also the treatments of straw mulch and nutrient water-retaining agent combination,which augmented 2.70kg/ ( mm·ha) to 3.60kg/ ( mm·ha).All of that tested the comprehensive technology is the affective way to improve precipitation ut ilization.The effect of nutrient water-retaining agent treatments was the best ones among of the treatments of water-saving agents.At the same time,the content of nitrate,available phosphorous and potassium,and organic matter of soil under reasonable straw mulch covering and cultivation,otherwise it would be decreased the content of available potassium and organic matter.

Key words: Corn, Dryland, Precipitation utilization, Soil nutrient

CLC Number:

S273

WU Ji-cheng, WANG Zhi-he, HE Fang, YANG Zhi-juan, XUE Yi-fang. Effect of Different Technological Measures on Utilization of Precipitation and Soil Nutrients[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2005, 20(6): 73-76. doi: 10.3321/j.issn:1000-7091.2005.06.019.

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