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周家镇位于大竹县东南方向,距县城32 km,地处铜锣山与明月山之间。有14个行政村,131个村民小组,2个社区居民委员会,6个社区小组,共45 503人。幅员面积72 km2,耕地面积2 045.2 hm2,常年水稻栽播面积1 238.9 hm2,以一季杂交中稻为主。但有5个地处山谷和深丘的行政村,因稻田阴冷、低洼、夹沟而土温低,回温慢,加之农民的一些不良种植习惯,导致部分田块在水稻移栽后出现坐篼。近年来,坐篼面积有呈上升的趋势。坐篼的稻田不仅有效分蘖减少和有效穗不足,而且穗小粒轻和稻谷品质下降,从而影响当季水稻产量。一般坐篼稻田可减产10%~30%,严重的稻田减产可达50%。自2011年起,作者对山谷丘陵地带水稻坐篼的情况进行了认真的调查研究,分析了坐篼发生的原因,并提出了相应的防治对策。
Located in the southeast of Dazhu County, Zhoujia Town is 32 km away from the county seat and is located between Tongluo Mountain and Mingyue Mountain. There are 14 administrative villages, 131 villagers’ groups, 2 neighborhood committees and 6 community groups, totaling 45 503 people. Covering an area of 72 km2, arable land area of 2 045.2 hm2 and annual perennial rice planting area of 1 238.9 hm2, mainly in the first season hybrid rice. However, there are 5 administrative villages located in valleys and deep mounds. Due to the cold, low-lying and low-lying paddy fields, the soil temperature is low and the return temperature is slow. In addition, some unfavorable planting practices of peasants cause some fields to appear after transplanting rice篼. In recent years, the sitting area has been on the rise. Sitting paddy fields not only reduce the effective tillering and effective panicles, but also the ear grains and light rice quality decline, thus affecting the current season rice production. The general production of rice fields can reduce production 10% to 30%, a serious reduction of paddy fields up to 50%. Since 2011, the author has carried out a careful investigation on the situation of rice sitting in the valley hills and hills, analyzed the causes for the occurrence of sows, and put forward corresponding control measures.