论文部分内容阅读
一、精细整地甜高粱对土质要求不严,PH 在5～8.5的土壤中均能生长,但由于甜高粱种子较小,顶土能力较弱,整地质量要求深、平、细、碎,除掉杂草并施足基肥,667米~2施农家肥2～3吨、磷酸二铵12～15千克、尿素5千克、硫酸钾5～6千克,深翻入土,耙压保墒。二、适期播种当5厘米地温稳定在12℃时为最佳播种期,一般在4月下旬～5月上旬,地膜栽培可提前5天左右。采用60厘米等行距条播,667米~2播种量1.5千克左右,播种深度3～4厘米。带肥下种,种肥667米~2用磷酸二铵2～3千克、硫酸钾3～4千克。三、田间管理1、间苗、定苗、去分蘖 2～3片叶时间苗,4～6片时定苗,株距14厘米,避免幼苗拥挤,减少地方消耗,以利于培养壮苗。由于甜高粱植株高大,茎叶繁茂,应合理密植,一般667米~2留苗6000～8000株为宜(株距14厘米、行距60厘米),结合定苗应早去分蘖,促单株壮苗。2、中耕、培土幼苗2～3叶期,进行第1次中耕,可起到提高地
First, the fine preparation of sweet sorghum on the soil preparation of the land less stringent, PH 5 to 8.5 in the soil can grow, but due to the smaller sweet sorghum seeds, top soil capacity is weak, the preparation of deep, deep, fine, broken, except Weed-out weeds and foot-based fertilizer, 667 m ~ 2 manure 2 to 3 tons of fertilizer, diammonium phosphate 12 to 15 kg, urea 5 kg, potassium sulfate 5 to 6 kg, deep into the soil, rake pressure soil moisture. Second, the appropriate sowing when 5 cm temperature stability at 12 ℃ for the best sowing time, usually in late April ~ early May, plastic film cultivation can be about 5 days in advance. Using 60 cm spacing and other broadcast, 667 m ~ 2 sowing about 1.5 kg, sowing depth of 3 to 4 cm. Take fertilizer under the kind of fertilizer 667 m ~ 2 with 2 to 3 kg of diammonium phosphate, potassium sulfate 3 to 4 kg. Third, the field management 1, Miao Miao, Dingmiao, to tiller 2 to 3 leaf time seedlings, 4 to 6 tablets Dingmiao, spacing 14 cm, to avoid seedling crowded, reduce local consumption, in order to facilitate the cultivation of strong seedlings. As the sweet sorghum tall plants, lush stems and leaves should be reasonable close planting, generally 667 m ~ 2 leave seedlings 6000 ~ 8000 is appropriate (spacing 14 cm, spacing 60 cm), combined with Dingmiao should go tiller early, and promote strong seedling. 2, cultivation, soil seedling 2-3 leaf stage, the first time cultivator, can play to improve