摘要
晋谷21号化控间苗谷种在不同环境条件下种植试验结果显示:谷子化控间苗技术受环境因素影响,如土质、肥力、土壤墒情、播期等。土壤黄褐墒情(含水量15%～18%)和春播(4月下旬)采用35%、15kg/hm2或50%、11.25kg/hm2的配比与播量;土壤黄墒情(含水量13%～15%)和夏播采用50%、15kg/hm2或50%、11.25kg/hm2的配比(正常谷种占混播谷种的比例)与播量。红土壤与有机质含量高的肥土比一般壤土地MND制剂处理谷种浓度要高。因此,化控间苗谷种应因地制宜。
The experiment of chemical choppingout of millet was carried out with Jingu 21 variety under different environment conditions. Results showed that the technique of choppingout by chemical agent was affected by some factors such as soil texture, soil fertility, soil moisture content and sowing time, etc. Under the condition of rich moisture content and spring sowing, the compounding ratio and sowing rate was 35%, 15 kg/hm2 or 50%, 11.25 kg/hm2; under the condition of poor moisture content and summer sowing, the compounding ratio and sowing rate was 50%, 15 kg/hm2 or 50%, 11.25 kg/hm2. It was discovered that the number of remained seedlings under MND treatment was greater in the reddish soil and the soil with high fertility than in the loam soil and loamy fine sand. The problem could were solved by adjusting the concentration of MND pharmacy. Hence, the technique of millet choppingout by chemical agent should be applied in line with local condition.
出处
《干旱地区农业研究》
CSCD
北大核心
2003年第4期31-34,共4页
Agricultural Research in the Arid Areas
基金
国家创新技术基金资助项目"谷子化控间苗技术应用"(02EFN211400072)研究
