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首页> 外文期刊>The Kasetsart Journal >Reduction of Chemical Application in Soybean at Farm Level: II Comparison between Wet and Dry Seasons Planting
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Reduction of Chemical Application in Soybean at Farm Level: II Comparison between Wet and Dry Seasons Planting

机译：减少农场一级大豆的化学施用：湿季和旱季种植的比较II

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摘要

A comparison study was conducted for soybean production in the rainy season at Thongphaphoom district and in the dry season at Nongprue district of Kanchanaburi province in the year of 2001 to 2002. The objective of the study was to seek for the possibility of reducing chemical applications in soybean. Treatments were composed of the chemical and non-chemical control for weed, insect and soil fertility designed as non, less chemical and moderate chemical applications. The given treatments were compared with farmer practices in which various kinds of chemical at different amounts were used in soybean production. This study was an on-farm research conducted in the farmer field where the treatments were subjected to the actual conditions of pest, weed and soil heterogeneity. Soybean cultivar "Chakkrabhandhu no.1" was grown in the upland soil on 20 July 2001 in the rainy season trial while the same variety was planted in the paddy field after rice in the dry season on 20 December 2001. Results of the experiments revealed that the yield of soybean crop grown in the wet season was lower than those of the dry season. The main factor reducing yield in both trials were weed infestation. Weed growth in the rainy season was mainly broadleaves while in the dry season the main weed infestation was volunteer rice. In both trials, insect infestation were mild, therefore, the use of neem extract seemed enough for controlling insect pests in soybean fields. In both experiments, it was found that the application of triple super phosphate (TSP) at 62.5 kg/ha increased the yield of soybean to the highest level among other treatments. While the biophoska organic fertilizer raised the yield to the second highest level in both trials. It can be concluded in this study that for growing soybean successfully in the rainy season, post emergence herbicides such as Formezafen plus Fluazifop-p-butyl and the application of triple super phosphate were needed. However, to grow soybean successfully in the dry season, the triple super phosphate or biophoska alone was sufficient for increasing yield of soybean grown after rice.
机译：在2001年至2002年之间，对北碧府通普蓬区的雨季和旱季，北碧府农普勒区的大豆产量进行了比较研究。该研究的目的是寻找减少大豆化学施用的可能性。大豆。处理包括化学和非化学控制杂草，昆虫和土壤的肥力，这些控制被设计为非化学，中等化学应用。将给定的处理方式与农民的做法进行了比较，在农民的做法中，大豆生产中使用了不同量的各种化学物质。这项研究是在农民田间进行的一项农场研究，其中的处理要根据病虫害，杂草和土壤异质性的实际情况进行。在雨季试验中，大豆品种“ Chakkrabhandhu 1号”于2001年7月20日在旱地上生长，而在旱季水稻于2001年12月20日在稻田中种植了相同的品种。试验结果表明，雨季种植的大豆作物的收成低于旱季。两项试验中降低产量的主要因素是杂草侵染。在雨季，杂草的生长主要是阔叶，而在旱季，杂草的主要侵染是自愿稻。在这两个试验中，昆虫的侵扰都很轻微，因此，使用印ne提取物似乎足以控制大豆田中的害虫。在这两个实验中，发现以62.5 kg / ha的剂量施用三重超磷酸盐（TSP）可使大豆产量增至其他处理中的最高水平。在两次试验中，biophoska有机肥料的产量均提高至第二高水平。在这项研究中可以得出的结论是，要在雨季成功种植大豆，需要使用福美他芬加氟西氟普-对-丁基等出苗后除草剂以及三重过磷酸钙的应用。但是，要在干旱季节成功种植大豆，仅使用三重过磷酸钙或生物磷肥就足以提高水稻种植后的大豆产量。

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