早籼15“稀长大”超高产栽培技术模式研究

目的]为提高早籼15的种植效益。方法]依据早籼15高产,早发性好,分蘖力强,产量潜力高等优点,结合大田生产实际,提出了早籼15"稀长大"超高产栽培技术模式。结果]早籼15采用肥床旱育秧,适当提前播种,苗床播种量以60g/m2最好,秧龄40d最佳,齐苗前保持床土相对含水量70%～80%,培育带3个分蘖以上的大壮苗。移栽期在4月底至5月上旬。大田株行距13.3cm×20.0cm,栽37.5万穴/hm2,基本苗150万～180万株/hm2。在总施氮量120kg/hm2的条件下,施氮配比以基肥∶分蘖肥∶穗肥=4～5∶3∶3～2较为适宜。结论]早籼15的"稀长大"超高产栽培技术模式是适期播种,稀播壮秧,化学调控,合理密植,平衡施肥,浅水间歇灌溉促控,加强大田病虫害综合防治。

Study on "Xi-Chang-Da" Super-high Yield Cultivation Pattern Technology of Early Indica 15

Objective The research aimed to increase the planting benefit of Early indica 15.Method According to the advantages of Early indica 15 including good prematurity,strong tillering ability and high yield potential,combining with field production activity,"Xi-Chang-Da" super-high yield cultivation technology pattern of Early indica was put forward.Result The seedlings Early indica was raised in dry fertile beds and sowed ahead of time,with the best seedbed sowing quantity of 60 g/m2 and the best seedling age of 40 d.And the relative water content in seedbed soil should be maintained at 70 %～80 % before full emergence of seedling and strong seedlings with more than 3 tillers should be bred.Transplanting period was from the end of April to early May.The rowing space in the field was 13.3 cm ×20.0 cm,planting density was 37.5×104 sockets/hm2 and basic seedling number was 150×104～180×104 plants/hm2.Under the conditions of total nitrogen application amount of 120 kg/hm2,the suitable proportion of nitrogen was as follows:base fertilizer:tillering fertilizer:panicle fertilizer =4～5:3:3～2.Conclusion "Xi-Chang-Da" super-high yield cultivation technology pattern of Early indica 15 was as follows:sowing sow in suitable time,rational close planting,balanced fertilization,controlling by shallow water intermittent irrigation and strengthening integrated control on plant diseases and insect pests in the field.