稻田养殖龙虾能什么样的复合肥

2025-03-07 09:23:32
推荐回答(1个)
回答(1):

入秋前后的时候是在稻田里养虾投种的时期,此阶段要做好以下几个工作,才能达到更好的效果。
一、投放虾种时间要把握住
稻谷收割以后,要立即着手投放虾种,时间一般为九月中下旬。用于养虾的稻田,收割最好用机械收割,可以更快的收割,不致于耽搁投放时间。机器收割,也使得稻草能够均匀的洒落在稻田中,有利于小龙虾的生长。机械收割,留茬齐整,能够更直观的控制水位。稻田收割后,要立即放水入田。水深度在30厘米最好。放水入田的时候,要用密网过滤,防止有害物随水进入。蓄水后,一定要立即投放虾种。  
二、虾种投放方法和密度的控制  
1、虾种投放密度的控制:稻田里投放虾种,根据稻田养殖的实际状况,投放不同规格的虾种,第一年养殖以下的稻田,投放每只30g的亲虾,每亩地15kg或者25kg,如是养殖一年以下的稻田,投放10到20kg每亩地。幼虾投放,市场收购或者人工捕捉的幼年虾,一公斤250只到600只,如是首年养殖,每亩地投放1万多只即可,一年以上的稻田,每亩地投放八千多只。三十放养人工繁殖的虾苗,2到3cm的规格,体重1-2g,首年养殖一万五千多只,一年以上的投放一万只左右。
2、虾种投放的方法:投放虾种,注重虾种质量,一个稻田里要放一种规格的虾种,还要一次性放足。投放虾种之前,由于虾个体都会有不同程度的损伤,投放虾种要先进行消毒处理。从外面购买的虾种,由于采用干法运输,虾种离开水的时间长,有些虾会昏迷过去,投放之前要先在稻田水里浸泡1分钟,提起搁置两分钟到三分钟,再浸泡一分钟,反复两次到三次,让虾种的体表和虾鳃吸足水之后再放养,可以提高成活率。
三、虾种投放注意点:  
1、稻田在收割以后,应当禁止鸡鸭鹅进入稻田,保持稻田里营养物的丰富,预防有害菌进入。2、时间要赶早,在稻谷成熟,机械收割以后,就应当灌水,投放虾种,首年投放,虾苗以幼虾为好。3、投放虾种的时候,注意密度的把控,在稻田里均匀投放,以免导致水体缺氧。4、投放时间的选择,应当在早晚或者雨天,避免阳光直射天和高温天。
)南方春耕时,对有肥田草和稻草还田的田块,每亩播洒1公斤农盛乐种植专用菌制成的500公斤稀释液沤田;没有肥田草和稻草还田的田块,每亩施50公斤的发酵堆肥。
(2)用0.5%农盛乐种植专用菌液(每0.5斤农盛乐种植专用菌液加100斤水)浸种2-4小时后播入秧场。
(3)秧苗长到2-3片叶时,用0.1%农盛乐种植专用菌液(每0.1斤农盛乐种植专用菌液加水100斤)喷洒两次,增强成秧率。插秧前,用0.2%农盛乐种植专用菌液(每0.2斤农盛乐种植专用菌液加水100斤)泡根5分钟,保苗促长。
(4)移栽期,追堆肥每亩50公斤或用农盛乐种植专用菌随水浇灌。
(5)生长分蘖期、孕穗期、抽穗期分别用0.2%农盛乐种植专用菌液(每0.2斤农盛乐种植专用菌稀释液加水100斤)喷洒叶面也可视长势每周叶面喷施一次1%农盛乐种植专用菌液(每1斤农盛乐种植专用菌液加水100斤)。
(6)用农盛乐种植专用菌稀释液除草。秋收后,每亩撒施200-300公斤农盛乐种植专用菌稀释液发酵堆肥,利用农盛乐种植专用菌液促生长作用,让草籽打破休眠常规,反季节提前萌芽,不能过冬而死。第二年春,喷施一次0.2%农盛乐种植专用菌液,加快残余草籽发芽,然后通过春耕翻地和旱地锄草,将杂草沤死或除去。如此连续二、三年,可清除全部杂草。以上办法适用于其它水田作物。

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