高产小麦土、肥、水综合效应及其技术指标的研究

作者在控水、控肥、控土的条件下，通过试验建立小麦产量依土壤肥力、施磷量、施钾量、施氮总量、供水总量而变化的数学模型，分析模型指出：高产麦田土肥水措施应以培肥地力、稳定氮肥用量、增施钾磷肥和满足供水为重点，并提出实现亩产６００ｋｇ的土肥水技术指标为：土壤有机质含量１．１６６％～１．２１７％，全Ｎ０．０７５５％～０．０８０％，碱解Ｎ１００．４１～１０７．８５ｐｐｍ，速效Ｐ＿２Ｏ＿５６８．９４～７３．７７ｐｐｍ，速效Ｋ＿２Ｏ９２．５２～９５．２６ｐｐｍ，要求养分供应总量Ｎ为３２．０６ｋｇ／ｍｕ，Ｐ＿２Ｏ＿５为２１．５ｋｇ／ｍｕ，Ｋ＿２Ｏ为３５．１２ｋｇ／ｍｕ，供水总量为６００ｍｍ，水分生产效率１ｋｇ／ｍｍ．ｍｕ。

Studies on the Comprehensive Effects of Soil, Fertilizer and Water and Their Techical Quota for High Yield Wheat

A Mathematical model which imitates that the yield of wheat changes withfertility of soil and with total P, K, N and water supplied has been estiblisbed. Theexperiments were carried out under the control of water,fertilizer and soil. The modelpoints out that the soil, fertilizer and water measures of high yield wheat should bestressed on cultivating the fertility of soil, stabilizing the supply of N-fertilizer,increasing the supply of P, K and meeting the needs of water. The techncal quota ofsoil,fertilizer and water for wheat seed yield 600kg per mu are: content of soil or-gainc substance 1.166～1.217%, total N 0.0755～0.08%, alkali hydrolysis N100.41～107.85ppm, rapidly available P_2O_5 68.94～72.77 ppm, rapidly availableK2O 92.52～96.26ppm, total N supplied 32.06kg/mu, total P_2O_5 21.5kg/mu, totalK_2O 35. 12 kg /min total water supplied 600 mm, production effect of water 1 kg/mm. mu.