论文部分内容阅读
研究在棉花不同的生育期喷施不同浓度的ＤＰＣ对棉花养分的流向、流量和产量的影响，结果表明：ＤＰＣ有调控养分向根和繁育器官流动，减少茎叶中养分含量促进早熟的效果。ＤＰＣ调控的量必须合适，量少达不到化控的效果，量过大反而抑制养分向繁育器官的流动。在中等肥力、密度为２２．０５×１０４株·ｈｍ－２条件下，ＤＰＣ化控总用量１３５ｇ·ｈｍ－２，分别在蕾期、开花期和盛花期３次进行，浓度分别为３３．３，５５．０，６６．７ｇ·Ｌ－１，效果最佳。养分主要分布在繁育器官中，其中Ｎ，Ｐ主要分配在棉籽中，而Ｋ分配在铃壳中。
The effects of spraying different concentrations of DPC on the flow, flow and yield of cotton were studied at different growth stages of cotton. The results showed that DPC could regulate the flow of nutrients to root and reproductive organs, reduce the nutrient content in stems and leaves and promote early maturity. The amount of DPC regulation must be appropriate, the amount of less than the effect of chemical control, the amount of too large but inhibit the flow of nutrients to the breeding organs. Under medium fertility and density of 22.05 × 104 strains · hm-2, the total dosage of DPC chemical control was 135 g · hm-2, which were 33% at budding, flowering and full flowering respectively , 55.0,66.7g · L-1, the best effect. Nutrients are mainly distributed in breeding organs, of which N and P are mainly distributed in cottonseed, while K is distributed in the shell.