太湖公社是靠太湖沿岸线较长的一个公社,从土壤性质来看是以粉砂含量较高的湖沙土、白土为主,远离太湖的大队有部分青紫泥。其中湖沙土约占60%左右,白土占30%左右,青紫泥等占10%左右。我所试制的“土壤植株营养速测箱”测得湖沙土缺磷少钾(速效磷1～5ppm,速效钾45～50ppm)。为了验证土壤速测的正确性,摸索湖沙土施用磷、钾肥的效果,我们把嘉兴地 Taihu Lake commune by the coast of Taihu Lake is a relatively long commune, from the perspective of the nature of the soil is a high silt content of sandy loam, clay-based, part of the group away from the Taihu Lake purple mud. Among them, about 50% of lakes and sand, about 30% of white clay and about 10% of brucite. I trial production of “soil plant nutrition speed test box” measured lacustrine phosphorus deficiency potassium (available phosphorus 1 ~ 5ppm, available potassium 45 ~ 50ppm). In order to verify the correctness of soil testing, to explore the effect of phosphorus and potassium fertilizer applied to the lake, we put Jiaxing