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首页> 外文会议>International Conference on Science and Technology for Desertification Control; 20061014-16; Beijing(CN) >Preliminary Report on Conservation Tillage in Dryland in Yellow River Basin
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Preliminary Report on Conservation Tillage in Dryland in Yellow River Basin

机译：黄河流域旱地保护性耕作的初步报告。

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摘要

Soil erosion is a major problem in the Yellow River Basin. Conservation agriculture which features reduced or zero tillage, mulch retention, crop rotations and cover crops, offers a possible solution. In this experiment, no-tillage and conventional tillage were compared in the Yellow River basin of Inner Mongolia. The results showed that: (1) In 0- 5, 5 - 10, 10- 15 and 15- 20 cm soil layers, the soil temperature under conventional tillage was lower than that of no-tillage in maize, millet, glutinous millet and oat fields; In 0- 10 and 10 - 20 cm soil layers, the soil water content of conventional tillage was higher than that of no-tillage. (2) For maize and glutinous millet, the soil organic matter content of no-tillage was higher than that of conventional tillage. For millet and oat, the soil organic matter content of no-tillage was lower than that of conventional tillage. For millet and oat, the soil total N content of no-tillage was higher than that of conventional tillage. For glutinous millet and maize, the soil total N content of no-tillage was lower than that of conventional tillage. For all crops, the soil contents of total P, dissolved N and readily available P of no-tillage were higher than those of conventional tillage. (3) The trial showed a yield decrease because no-tillage method was applied in the first year and no mulching. The maximum yield decrease (16.7%) was for glutinous millet, while the minimum (8.1%) was for maize. The yield decrease of millet and oat was 14.7% and 10.4%, respectively.
机译：水土流失是黄河流域的一个主要问题。保护性农业以减少耕作或零耕作，地膜覆盖，轮作和覆盖作物为特征，提供了一种可能的解决方案。在该实验中，比较了内蒙古黄河流域的免耕和常规耕作。结果表明：（1）在0-5、5-10、10-15和15-20 cm土层中，常规耕作的土壤温度低于免耕玉米，小米，糯米和玉米。燕麦田;在0-10和10-20 cm的土壤层中，常规耕作的土壤含水量高于免耕的土壤含水量。 （2）对于玉米和糯米，免耕土壤有机质含量高于常规耕作。对于小米和燕麦，免耕的土壤有机质含量低于常规耕作。对于小米和燕麦，免耕土壤的总氮含量高于常规耕作。对于糯米和玉米，免耕的土壤总氮含量低于常规耕作。对于所有农作物，免耕的土壤总磷，可溶性氮和速效磷的土壤含量均高于常规耕作。 （3）由于第一年不采用免耕法且没有覆盖，该试验表明产量下降。糯米的最大产量下降（16.7％），而玉米最小的产量下降（8.1％）。小米和燕麦的减产分别为14.7％和10.4％。

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