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New High-Yield Cultivation Technique for Soybeans: "Four Changes and One Addition"
With the traditional tillage and sowing method for growing soybeans, the rows are narrow and the plants too dense, and combined with various other reasons, yields have long hovered around 100-150 kg. Through years of experimental research, we have worked out a new approach that can increase soybean yields by more than 40%, namely the "Four Changes and One Addition" technique. The usual measures for raising soybean yields, besides selecting new high-quality, high-yield varieties, also include paying attention to crop rotation. According to experiments, after many years of continuous cropping, soybeans show slow growth, short plants, yellowing lower leaves, early leaf drop, and few pods with small seeds. Experiments have also proven that continuous cropping (monocropping) for more than 3 years can reduce yields by 20%-30%, or even more, and 2 years of continuous cropping following a one-year break can reduce yields by more than 30%. Therefore, crop rotation and changing to a different crop are of great significance in soybean production. To achieve high-yield and super-high-yield soybean cultivation, the new "Four Changes and One Addition" cultivation technique should be implemented on this basis. The specific methods of "Four Changes and One Addition" are:
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