不同种植年限对压砂地土壤盐分及西瓜产量的影响

doi:10.3969/j.issn.1674-8530.18.1197

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Abstract Through field experiments, effects of planting years on soil salinity and yield of watermelon in the gravel-sand mulched field around Xiangshan region of Ningxia were studied in order to provide a reference for continuous use of gravel-sand mulched field and estimation of watermelon productivity. The results showed that the soil salinity in 0-80 cm soil layer decreased continuously with the increase of planting years. After 6 a, 10 a, and 15 a planting, the salinity in 0-80 cm soil layer in saline-alkaline gravel-sand mulched field is lowered by 70.3%, 21.4% and 56.4%, respectively, in comparison with 3 a planting soil. However, the salinity in non-saline-alkaline gravel-sand mulched field is decreased by 50.6%, 62.4% and 34.8%, respectively. With increasing soil depth, the salinity rises in both sorts of gravel-sand mulched field. The pH value decreases firstly and then increases across 0-80 cm soil layer in the non-saline-alkaline gravel-sand mulched field. The yield of watermelon is closely related to soil salinity; specially, the yield increases with decreasing salinity in the saline-alkaline gravel-sand mulched field. However, the yield in the non-saline-alkaline gravel-sand mulched field rises initially and declines afterwards with increasing soil salinity.

Key words： planting years gravel-sand mulched field salt and alkali soil salt watermelon production

Received: 15 May 2018

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	MA Zhong-Sheng-
	TAN Jun-Li-
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	MA Xiao-Fu-
	WEI Tong-

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MA Zhong-Sheng-,TAN Jun-Li-^,*等. Effects of planting years on soil salinity and watermelon yield in gravel-sand mulched field[J]. Journal of Drainage and Irrigation Machinery Engin, 2018, 36(11): 1200-1204.

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http://zzs.ujs.edu.cn/pgjx/EN/10.3969/j.issn.1674-8530.18.1197 OR http://zzs.ujs.edu.cn/pgjx/EN/Y2018/V36/I11/1200

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