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毕节县过去种黄豆产量较高,但自六十年代推广使用氮素化肥后,由于磷肥施用量不足,以及其它原因,导致土壤普遍缺磷,黄豆产量逐年下降。农民普遍反映,近年来种的黄豆,植株高大、枝叶茂盛,容易牵藤,花多荚多,但秕粒多,结实率低,产量不高。针对这些问题,我们在毕节县农业区划土地资源调查中,认真分析了黄豆生长发育过程中的需肥特点,尤其是对磷素的需要,结合我县土壤普遍缺磷的情况,提出了黄豆施用磷肥的建议,并于1983、1984连续两年进行了磷肥裹豆种的调查和试验示范,结果证明,磷肥裹豆种增产效果显著,现将基本情况总结如下。
In the past, Bijie County had a high yield of soya beans. However, since the promotion of the use of nitrogen fertilizers in the 1960s, due to insufficient application of phosphate fertilizer and other causes, the soil generally lacks phosphorus and the output of soybeans has been declining year by year. Farmers generally reflect the recent planting of soybeans, tall plants, lush foliage, easy to catch the vine, spend more pods, but more than grain, low seed setting, yield is not high. In response to these problems, we have carefully analyzed the need for fertilizer characteristics during the growth and development of soybeans in Bijie County, especially the need for phosphorus, combined with the general lack of phosphorus in the soil of our county, put forward the application of soybeans Phosphate fertilizer recommendations, and in 1983,1984 for two consecutive years of phosphorus-coated bean species of investigation and demonstration, the results show that the phosphorus-coated bean species yield significant results, the basic situation is summarized as follows.