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麦茬水稻旱种田间杂草综合防除研究初报

DOI: 10.3321/j.issn:1000-7091.1991.03.015, PP. 81-87

Keywords: 水稻旱种,杂草危害,杂草防除

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Abstract:

在田间条件下,研究了杂草的发生危害规律及防除关键技术等.初步认为:1.杂草对旱种水稻生长的影响主要表现在降低产量,减少成穗数、结实率、千粒重和穗长|2.杂草累计收获总干重或禾本科杂草干重可作为杂草危害程度的指标|3.禾本科杂草危害较严重,是旱种水稻田的优势草类|4.旱种水稻除草临界期为播种后第25~40天.此外,对杂草发生潜力、除草时期等也进行了讨论.

References

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