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栽培和利用冬季绿肥,是开辟肥源的一条重要途径。在绿肥的试种过程中,各地的生产实践和一些肥效对比试验,都说明绿肥的增产作用。但连续多年栽培和施用冬季绿肥,对双季稻的增产效果及其对土壤肥力的影响如何,区内研究资料还不多,一部分群众对冬种绿肥的以田养田的作用尚有怀疑。显然,解决这一问题,对扩种及利用冬季绿肥有一定的意义,所以,柳州农业试验站从1959年冬至1963年进行了试验,现将初步结果报道于下,以供参考。
Cultivation and utilization of green manure in winter, is an important way to open up fertilizer sources. In the green manure trial process, around the production practices and some fertilizer efficiency comparison test, explain the green manure production. However, cultivation and application of winter green manure for many years in succession have a doubting effect on the yield increasing effect of double cropping rice and its impact on soil fertility. There is not much research data available in the region. Obviously, to solve this problem is of some significance for the expansion and utilization of green manure in winter. Therefore, the experiment of Liuzhou Agricultural Experiment Station was carried out from the winter of 1959 to the year of 1963, and the preliminary results are reported below for reference.