榆林沙区踏郎、花棒飞机播种的适宜播期

中国沙漠

1984, Vol. 4

Issue (3): 45-50

沙区生产经验与技术

榆林沙区踏郎、花棒飞机播种的适宜播期

金招寿

中国科学院西北水土保持究所研

Air seeding of Hedysarum fruticosum var. leave and Hedysarum scoparium——Case study in Yulin Sandy Area, Shaanxi.

Jin Zhaoshou

Northwestern Institute of Water and Soil Conservation, Academia Sinica

全文: PDF(439 KB)

摘要： 播期的选择,主要取决于大气降水与起沙风的密切配合,以培植抗风蚀的壮苗。在5月,东南风与西北风交替出现较多,有利于种子覆沙。6月开始,起沙风的频率明显下降,不利于种子覆沙。20毫米左右的连续降水对覆沙种子发芽出苗极为有利,主要集中在6月中旬以后。然而,7月上、中旬降水后长出的植株,仍具有较强的抗风蚀性;7月下旬降水后长出的植株,抗风蚀性大大减弱。因此,根据以上分析,提出踏郎、花棒的飞播日期从5月上旬到6月上旬,尤以5月中、下旬为宜。

关键词： 飞机播种; 榆林沙区; 适宜播期; 种子发芽; 起沙风; 人工播种; 播量; 沙丘链; 样地; 温度条件

Abstract: The sellcction of air seeding season depends on mainly the close sequence of rainfall and the sand-blowing wind, and wind erosion-resistant seedlings is considered as main plant for cultivating. In May, the southeast and northwest winds alternate more frequently, and this is favourable to the covering of seeds by sand. In early June, the frequence of the sand-blowing wind is obviously reduced, so it is unfavourable to the covering of seeds by sand. The continuous rainfall of 20 mm or so indispensable to the germination of seeds covered by sand is concentrated mainly in the period after the second decade of June. However, seedlings emerging after rainfall in the first and second decades of July are still more resistant to wind erosion, whereas seedlings emerging after the rainfall in the third decade of July will be greatly weakened in their resistance of wind erosion. On the basis of above-mentioned analysis, the auther puts forward the suggestion that the air seeding of Hedysarum fruticosum var. leave and H. scoparium should be conducted during the first decade of May to the first decade of June, more available of the second and third decades of May to realize this practice.

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引用本文:

金招寿. 榆林沙区踏郎、花棒飞机播种的适宜播期[J]. 中国沙漠, 1984, 4(3): 45-50.

Jin Zhaoshou . Air seeding of Hedysarum fruticosum var. leave and Hedysarum scoparium——Case study in Yulin Sandy Area, Shaanxi.. JOURNAL OF DESERT RESEARCH, 1984, 4(3): 45-50.

链接本文:

http://119.78.100.150:82/zgsm/CN/ 或 http://119.78.100.150:82/zgsm/CN/Y1984/V4/I3/45

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