复配土对陕西地区小麦生长及品质的影响

Effect of Compound Soil on Growth and Qual-ity of Wheat in Shaanxi Province

本文针对风积沙资源化开采形成的大面积采沙迹地土壤性状恶化,进而导致植被恢复困难的问题,尝试用毛乌素沙地采沙迹地风沙土与其下覆砒砂岩复配,并结合小麦种植试验分析小麦对复配土的响应机制,以期为采沙迹地植被恢复与重建及生态环境改善提供科学依据。结果表明:复配土种植的小麦株高适中,复配比为1:2处理种植的小麦旗叶叶绿素含量(SPAD值)明显高于其他两种配比,复配比为1:2以及1:5处理种植的小麦叶片LAI值均较高。复配比例为1:2处理的小麦产量高达6203.58 kg•hm−2,比复配比为1:1和复配比为1:5高3.82%和7.86%。因此,我们认为砒砂岩与沙复配比为1:2时最有利于作物生长,小麦产量达到最高。

In this paper, for the problem of soil quality deterioration in a large area of sandy land formed by the exploitation of aeolian sand, which leads to the difficulty of vegetation restoration, this paper tries to use the sandy soil of mu us sandy land with its soft sandstone and sandy soil mixed soil, and combines with wheat planting experiment to analyze the mechanism of wheat for the recovery of sandy land restoration and reconstruction and ecological environment, so as to provide a scientific basis. The main conclusions are that the plant height planted in the compound soil was moderate, and the SPAD value of the flag leaf when soft rock and sand mixed ratio was 1:2 was significantly higher than that of others. When soft rock and sand mixed ratios were 1:2 and 1:5, the LAI values were higher. The yield of wheat with the compound ratio of 1:2 was as high as 6203.58 kg•hm−2, which was 3.82% and 7.86%higher than that with the compound ratio of 1:1 and 1:5. Therefore, we believe that the compound ratio of 1:2 is most beneficial to crop growth, whose yield is the highest.